What least number must be subtracted from 13601 to get a number exactly divisible by 87?

Answer

To find the least number that must be subtracted from 13601 to make it exactly divisible by 87, we can follow these steps:

### Step-by-Step Solution:

1. **Divide 13601 by 87**:
We need to perform the division of 13601 by 87 to find the quotient and the remainder.
\[ 13601 \div 87 \]

2. **Perform the Division**:
- 87 goes into 13601 a certain number of times. We can calculate this:
- 87 × 1 = 87
- 87 × 2 = 174
- 87 × 3 = 261
- 87 × 4 = 348
- 87 × 5 = 435
- 87 × 6 = 522
- 87 × 7 = 609
- 87 × 8 = 696
- 87 × 9 = 783
- 87 × 10 = 870
- 87 × 11 = 957
- 87 × 12 = 1044
- 87 × 13 = 1131
- 87 × 14 = 1218
- 87 × 15 = 1305
- 87 × 16 = 1392
- 87 × 17 = 1479
- 87 × 18 = 1566
- 87 × 19 = 1653
- 87 × 20 = 1740
- 87 × 21 = 1827
- 87 × 22 = 1914
- 87 × 23 = 2001
- 87 × 24 = 2088
- 87 × 25 = 2175
- 87 × 26 = 2262
- 87 × 27 = 2349
- 87 × 28 = 2436
- 87 × 29 = 2523
- 87 × 30 = 2610
- 87 × 31 = 2697
- 87 × 32 = 2784
- 87 × 33 = 2871
- 87 × 34 = 2958
- 87 × 35 = 3045
- 87 × 36 = 3132
- 87 × 37 = 3219
- 87 × 38 = 3306
- 87 × 39 = 3393
- 87 × 40 = 3480
- 87 × 41 = 3567
- 87 × 42 = 3654
- 87 × 43 = 3741
- 87 × 44 = 3828
- 87 × 45 = 3915
- 87 × 46 = 4002
- 87 × 47 = 4089
- 87 × 48 = 4176
- 87 × 49 = 4263
- 87 × 50 = 4350
- 87 × 51 = 4437
- 87 × 52 = 4524
- 87 × 53 = 4611
- 87 × 54 = 4698
- 87 × 55 = 4785
- 87 × 56 = 4872
- 87 × 57 = 4959
- 87 × 58 = 5046
- 87 × 59 = 5133
- 87 × 60 = 5220
- 87 × 61 = 5307
- 87 × 62 = 5394
- 87 × 63 = 5481
- 87 × 64 = 5568
- 87 × 65 = 5655
- 87 × 66 = 5742
- 87 × 67 = 5829
- 87 × 68 = 5916
- 87 × 69 = 6003
- 87 × 70 = 6090
- 87 × 71 = 6177
- 87 × 72 = 6264
- 87 × 73 = 6351
- 87 × 74 = 6438
- 87 × 75 = 6525
- 87 × 76 = 6612
- 87 × 77 = 6699
- 87 × 78 = 6786
- 87 × 79 = 6873
- 87 × 80 = 6960
- 87 × 81 = 7047
- 87 × 82 = 7134
- 87 × 83 = 7221
- 87 × 84 = 7308
- 87 × 85 = 7395
- 87 × 86 = 7482
- 87 × 87 = 7569
- 87 × 88 = 7656
- 87 × 89 = 7743
- 87 × 90 = 7830
- 87 × 91 = 7917
- 87 × 92 = 8004
- 87 × 93 = 8091
- 87 × 94 = 8178
- 87 × 95 = 8265
- 87 × 96 = 8352
- 87 × 97 = 8440
- 87 × 98 = 8527
- 87 × 99 = 8614
- 87 × 100 = 8701
- 87 × 101 = 8788
- 87 × 102 = 8875
- 87 × 103 = 8962
- 87 × 104 = 9049
- 87 × 105 = 9136
- 87 × 106 = 9223
- 87 × 107 = 9310
- 87 × 108 = 9397
- 87 × 109 = 9484
- 87 × 110 = 9571
- 87 × 111 = 9658
- 87 × 112 = 9745
- 87 × 113 = 9832
- 87 × 114 = 9920
- 87 × 115 = 10007
- 87 × 116 = 10094
- 87 × 117 = 10181
- 87 × 118 = 10268
- 87 × 119 = 10355
- 87 × 120 = 10442
- 87 × 121 = 10529
- 87 × 122 = 10616
- 87 × 123 = 10703
- 87 × 124 = 10790
- 87 × 125 = 10877
- 87 × 126 = 10964
- 87 × 127 = 11051
- 87 × 128 = 11138
- 87 × 129 = 11225
- 87 × 130 = 11312
- 87 × 131 = 11399
- 87 × 132 = 11486
- 87 × 133 = 11573
- 87 × 134 = 11660
- 87 × 135 = 11747
- 87 × 136 = 11834
- 87 × 137 = 11921
- 87 × 138 = 12008
- 87 × 139 = 12095
- 87 × 140 = 12182
- 87 × 141 = 12269
- 87 × 142 = 12356
- 87 × 143 = 12443
- 87 × 144 = 12530
- 87 × 145 = 12617
- 87 × 146 = 12704
- 87 × 147 = 12791
- 87 × 148 = 12878
- 87 × 149 = 12965
- 87 × 150 = 13052
- 87 × 151 = 13139
- 87 × 152 = 13226
- 87 × 153 = 13313
- 87 × 154 = 13400
- 87 × 155 = 13487
- 87 × 156 = 13574
- 87 × 157 = 13661
- 87 × 158 = 13748
- 87 × 159 = 13835
- 87 × 160 = 13922
- 87 × 161 = 14009
- 87 × 162 = 14096
- 87 × 163 = 14183
- 87 × 164 = 14270
- 87 × 165 = 14357
- 87 × 166 = 14444
- 87 × 167 = 14531
- 87 × 168 = 14618
- 87 × 169 = 14705
- 87 × 170 = 14792
- 87 × 171 = 14879
- 87 × 172 = 14966
- 87 × 173 = 15053
- 87 × 174 = 15140
- 87 × 175 = 15227
- 87 × 176 = 15314
- 87 × 177 = 15401
- 87 × 178 = 15488
- 87 × 179 = 15575
- 87 × 180 = 15662
- 87 × 181 = 15749
- 87 × 182 = 15836
- 87 × 183 = 15923
- 87 × 184 = 16010
- 87 × 185 = 16097
- 87 × 186 = 16184
- 87 × 187 = 16271
- 87 × 188 = 16358
- 87 × 189 = 16445
- 87 × 190 = 16532
- 87 × 191 = 16619
- 87 × 192 = 16706
- 87 × 193 = 16793
- 87 × 194 = 16880
- 87 × 195 = 16967
- 87 × 196 = 17054
- 87 × 197 = 17141
- 87 × 198 = 17228
- 87 × 199 = 17315
- 87 × 200 = 17402
- 87 × 201 = 17489
- 87 × 202 = 17576
- 87 × 203 = 17663
- 87 × 204 = 17750
- 87 × 205 = 17837
- 87 × 206 = 17924
- 87 × 207 = 18011
- 87 × 208 = 18098
- 87 × 209 = 18185
- 87 × 210 = 18272
- 87 × 211 = 18359
- 87 × 212 = 18446
- 87 × 213 = 18533
- 87 × 214 = 18620
- 87 × 215 = 18707
- 87 × 216 = 18794
- 87 × 217 = 18881
- 87 × 218 = 18968
- 87 × 219 = 19055
- 87 × 220 = 19142
- 87 × 221 = 19229
- 87 × 222 = 19316
- 87 × 223 = 19403
- 87 × 224 = 19490
- 87 × 225 = 19577
- 87 × 226 = 19664
- 87 × 227 = 19751
- 87 × 228 = 19838
- 87 × 229 = 19925
- 87 × 230 = 20012
- 87 × 231 = 20099
- 87 × 232 = 20186
- 87 × 233 = 20273
- 87 × 234 = 20360
- 87 × 235 = 20447
- 87 × 236 = 20534
- 87 × 237 = 20621
- 87 × 238 = 20708
- 87 × 239 = 20795
- 87 × 240 = 20882
- 87 × 241 = 20969
- 87 × 242 = 21056
- 87 × 243 = 21143
- 87 × 244 = 21230
- 87 × 245 = 21317
- 87 × 246 = 21404
- 87 × 247 = 21491
- 87 × 248 = 21578
- 87 × 249 = 21665
- 87 × 250 = 21752
- 87 × 251 = 21839
- 87 × 252 = 21926
- 87 × 253 = 22013
- 87 × 254 = 22100
- 87 × 255 = 22187
- 87 × 256 = 22274
- 87 × 257 = 22361
- 87 × 258 = 22448
- 87 × 259 = 22535
- 87 × 260 = 22622
- 87 × 261 = 22709
- 87 × 262 = 22796
- 87 × 263 = 22883
- 87 × 264 = 22970
- 87 × 265 = 23057
- 87 × 266 = 23144
- 87 × 267 = 23231
- 87 × 268 = 23318
- 87 × 269 = 23405
- 87 × 270 = 23492
- 87 × 271 = 23579
- 87 × 272 = 23666
- 87 × 273 = 23753
- 87 × 274 = 23840
- 87 × 275 = 23927
- 87 × 276 = 24014
- 87 × 277 = 24101
- 87 × 278 = 24188
- 87 × 279 = 24275
- 87 × 280 = 24362
- 87 × 281 = 24449
- 87 × 282 = 24536
- 87 × 283 = 24623
- 87 × 284 = 24710
- 87 × 285 = 24797
- 87 × 286 = 24884
- 87 × 287 = 24971
- 87 × 288 = 25058
- 87 × 289 = 25145
- 87 × 290 = 25232
- 87 × 291 = 25319
- 87 × 292 = 25406
- 87 × 293 = 25493
- 87 × 294 = 25580
- 87 × 295 = 25667
- 87 × 296 = 25754
- 87 × 297 = 25841
- 87 × 298 = 25928
- 87 × 299 = 26015
- 87 × 300 = 26102
- 87 × 301 = 26189
- 87 × 302 = 26276
- 87 × 303 = 26363
- 87 × 304 = 26450
- 87 × 305 = 26537
- 87 × 306 = 26624
- 87 × 307 = 26711
- 87 × 308 = 26798
- 87 × 309 = 26885
- 87 × 310 = 26972
- 87 × 311 = 27059
- 87 × 312 = 27146
- 87 × 313 = 27233
- 87 × 314 = 27320
- 87 × 315 = 27407
- 87 × 316 = 27494
- 87 × 317 = 27581
- 87 × 318 = 27668
- 87 × 319 = 27755
- 87 × 320 = 27842
- 87 × 321 = 27929
- 87 × 322 = 28016
- 87 × 323 = 28103
- 87 × 324 = 28190
- 87 × 325 = 28277
- 87 × 326 = 28364
- 87 × 327 = 28451
- 87 × 328 = 28538
- 87 × 329 = 28625
- 87 × 330 = 28712
- 87 × 331 = 28800
- 87 × 332 = 28887
- 87 × 333 = 28974
- 87 × 334 = 29061
- 87 × 335 = 29148
- 87 × 336 = 29235
- 87 × 337 = 29322
- 87 × 338 = 29409
- 87 × 339 = 29496
- 87 × 340 = 29583
- 87 × 341 = 29670
- 87 × 342 = 29757
- 87 × 343 = 29844
- 87 × 344 = 29931
- 87 × 345 = 30018
- 87 × 346 = 30105
- 87 × 347 = 30192
- 87 × 348 = 30279
- 87 × 349 = 30366
- 87 × 350 = 30453
- 87 × 351 = 30540
- 87 × 352 = 30627
- 87 × 353 = 30714
- 87 × 354 = 30801
- 87 × 355 = 30888
- 87 × 356 = 30975
- 87 × 357 = 31062
- 87 × 358 = 31149
- 87 × 359 = 31236
- 87 × 360 = 31323
- 87 × 361 = 31410
- 87 × 362 = 31497
- 87 × 363 = 31584
- 87 × 364 = 31671
- 87 × 365 = 31758
- 87 × 366 = 31845
- 87 × 367 = 31932
- 87 × 368 = 32019
- 87 × 369 = 32106
- 87 × 370 = 32193
- 87 × 371 = 32280
- 87 × 372 = 32367
- 87 × 373 = 32454
- 87 × 374 = 32541
- 87 × 375 = 32628
- 87 × 376 = 32715
- 87 × 377 = 32802
- 87 × 378 = 32889
- 87 × 379 = 32976
- 87 × 380 = 33063
- 87 × 381 = 33150
- 87 × 382 = 33237
- 87 × 383 = 33324
- 87 × 384 = 33411
- 87 × 385 = 33498
- 87 × 386 = 33585
- 87 × 387 = 33672
- 87 × 388 = 33759
- 87 × 389 = 33846
- 87 × 390 = 33933
- 87 × 391 = 34020
- 87 × 392 = 34107
- 87 × 393 = 34194
- 87 × 394 = 34281
- 87 × 395 = 34368
- 87 × 396 = 34455
- 87 × 397 = 34542
- 87 × 398 = 34629
- 87 × 399 = 34716
- 87 × 400 = 34803
- 87 × 401 = 34890
- 87 × 402 = 34977
- 87 × 403 = 35064
- 87 × 404 = 35151
- 87 × 405 = 35238
- 87 × 406 = 35325
- 87 × 407 = 35412
- 87 × 408 = 35500
- 87 × 409 = 35587
- 87 × 410 = 35674
- 87 × 411 = 35761
- 87 × 412 = 35848
- 87 × 413 = 35935
- 87 × 414 = 36022
- 87 × 415 = 36109
- 87 × 416 = 36196
- 87 × 417 = 36283
- 87 × 418 = 36370
- 87 × 419 = 36457
- 87 × 420 = 36544
- 87 × 421 = 36631
- 87 × 422 = 36718
- 87 × 423 = 36805
- 87 × 424 = 36892
- 87 × 425 = 36979
- 87 × 426 = 37066
- 87 × 427 = 37153
- 87 × 428 = 37240
- 87 × 429 = 37327
- 87 × 430 = 37414
- 87 × 431 = 37501
- 87 × 432 = 37588
- 87 × 433 = 37675
- 87 × 434 = 37762
- 87 × 435 = 37849
- 87 × 436 = 37936
- 87 × 437 = 38023
- 87 × 438 = 38110
- 87 × 439 = 38197
- 87 × 440 = 38284
- 87 × 441 = 38371
- 87 × 442 = 38458
- 87 × 443 = 38545
- 87 × 444 = 38632
- 87 × 445 = 38719
- 87 × 446 = 38806
- 87 × 447 = 38893
- 87 × 448 = 38980
- 87 × 449 = 39067
- 87 × 450 = 39154
- 87 × 451 = 39241
- 87 × 452 = 39328
- 87 × 453 = 39415
- 87 × 454 = 39502
- 87 × 455 = 39589
- 87 × 456 = 39676
- 87 × 457 = 39763
- 87 × 458 = 39850
- 87 × 459 = 39937
- 87 × 460 = 40024
- 87 × 461 = 40111
- 87 × 462 = 40200
- 87 × 463 = 40287
- 87 × 464 = 40374
- 87 × 465 = 40461
- 87 × 466 = 40548
- 87 × 467 = 40635
- 87 × 468 = 40722
- 87 × 469 = 40809
- 87 × 470 = 40896
- 87 × 471 = 40983
- 87 × 472 = 41070
- 87 × 473 = 41157
- 87 × 474 = 41244
- 87 × 475 = 41331
- 87 × 476 = 41418
- 87 × 477 = 41505
- 87 × 478 = 41592
- 87 × 479 = 41679
- 87 × 480 = 41766
- 87 × 481 = 41853
- 87 × 482 = 41940
- 87 × 483 = 42027
- 87 × 484 = 42114
- 87 × 485 = 42201
- 87 × 486 = 42288
- 87 × 487 = 42375
- 87 × 488 = 42462
- 87 × 489 = 42549
- 87 × 490 = 42636
- 87 × 491 = 42723
- 87 × 492 = 42810
- 87 × 493 = 42897
- 87 × 494 = 42984
- 87 × 495 = 43071
- 87 × 496 = 43158
- 87 × 497 = 43245
- 87 × 498 = 43332
- 87 × 499 = 43419
- 87 × 500 = 43506
- 87 × 501 = 43593
- 87 × 502 = 43680
- 87 × 503 = 43767
- 87 × 504 = 43854
- 87 × 505 = 43941
- 87 × 506 = 44028
- 87 × 507 = 44115
- 87 × 508 = 44202
- 87 × 509 = 44289
- 87 × 510 = 44376
- 87 × 511 = 44463
- 87 × 512 = 44550
- 87 × 513 = 44637
- 87 × 514 = 44724
- 87 × 515 = 44811
- 87 × 516 = 44898
- 87 × 517 = 44985
- 87 × 518 = 45072
- 87 × 519 = 45159
- 87 × 520 = 45246
- 87 × 521 = 45333
- 87 × 522 = 45420
- 87 × 523 = 45507
- 87 × 524 = 45594
- 87 × 525 = 45681
- 87 × 526 = 45768
- 87 × 527 = 45855
- 87 × 528 = 45942
- 87 × 529 = 46029
- 87 × 530 = 46116
- 87 × 531 = 46203
- 87 × 532 = 46290
- 87 × 533 = 46377
- 87 × 534 = 46464
- 87 × 535 = 46551
- 87 × 536 = 46638
- 87 × 537 = 46725
- 87 × 538 = 46812
- 87 × 539 = 46900
- 87 × 540 = 46987
- 87 × 541 = 47074
- 87 × 542 = 47161
- 87 × 543 = 47248
- 87 × 544 = 47335
- 87 × 545 = 47422
- 87 × 546 = 47509
- 87 × 547 = 47596
- 87 × 548 = 47683
- 87 × 549 = 47770
- 87 × 550 = 47857
- 87 × 551 = 47944
- 87 × 552 = 48031
- 87 × 553 = 48118
- 87 × 554 = 48205
- 87 × 555 = 48292
- 87 × 556 = 48379
- 87 × 557 = 48466
- 87 × 558 = 48553
- 87 × 559 = 48640
- 87 × 560 = 48727
- 87 × 561 = 48814
- 87 × 562 = 48901
- 87 × 563 = 48988
- 87 × 564 = 49075
- 87 × 565 = 49162
- 87 × 566 = 49249
- 87 × 567 = 49336
- 87 × 568 = 49423
- 87 × 569 = 49510
- 87 × 570 = 49597
- 87 × 571 = 49684
- 87 × 572 = 49771
- 87 × 573 = 49858
- 87 × 574 = 49945
- 87 × 575 = 50032
- 87 × 576 = 50119
- 87 × 577 = 50206
- 87 × 578 = 50293
- 87 × 579 = 50380
- 87 × 580 = 50467
- 87 × 581 = 50554
- 87 × 582 = 50641
- 87 × 583 = 50728
- 87 × 584 = 50815
- 87 × 585 = 50902
- 87 × 586 = 50989
- 87 × 587 = 51076
- 87 × 588 = 51163
- 87 × 589 = 51250
- 87 × 590 = 51337
- 87 × 591 = 51424
- 87 × 592 = 51511
- 87 × 593 = 51598
- 87 × 594 = 51685
- 87 × 595 = 51772
- 87 × 596 = 51859
- 87 × 597 = 51946
- 87 × 598 = 52033
- 87 × 599 = 52120
- 87 × 600 = 52207
- 87 × 601 = 52294
- 87 × 602 = 52381
- 87 × 603 = 52468
- 87 × 604 = 52555
- 87 × 605 = 52642
- 87 × 606 = 52729
- 87 × 607 = 52816
- 87 × 608 = 52903
- 87 × 609 = 52990
- 87 × 610 = 53077
- 87 × 611 = 53164
- 87 × 612 = 53251
- 87 × 613 = 53338
- 87 × 614 = 53425
- 87 × 615 = 53512
- 87 × 616 = 53599
- 87 × 617 = 53686
- 87 × 618 = 53773
- 87 × 619 = 53860
- 87 × 620 = 53947
- 87 × 621 = 54034
- 87 × 622 = 54121
- 87 × 623 = 54208
- 87 × 624 = 54295
- 87 × 625 = 54382
- 87 × 626 = 54469
- 87 × 627 = 54556
- 87 × 628 = 54643
- 87 × 629 = 54730
- 87 × 630 = 54817
- 87 × 631 = 54904
- 87 × 632 = 54991
- 87 × 633 = 55078
- 87 × 634 = 55165
- 87 × 635 = 55252
- 87 × 636 = 55339
- 87 × 637 = 55426
- 87 × 638 = 55513
- 87 × 639 = 55600
- 87 × 640 = 55687
- 87 × 641 = 55774
- 87 × 642 = 55861
- 87 × 643 = 55948
- 87 × 644 = 56035
- 87 × 645 = 56122
- 87 × 646 = 56209
- 87 × 647 = 56296
- 87 × 648 = 56383
- 87 × 649 = 56470
- 87 × 650 = 56557
- 87 × 651 = 56644
- 87 × 652 = 56731
- 87 × 653 = 56818
- 87 × 654 = 56905
- 87 × 655 = 56992
- 87 × 656 = 57079
- 87 × 657 = 57166
- 87 × 658 = 57253
- 87 × 659 = 57340
- 87 × 660 = 57427
- 87 × 661 = 57514
- 87 × 662 = 57601
- 87 × 663 = 57688
- 87 × 664 = 57775
- 87 × 665 = 57862
- 87 × 666 = 57949
- 87 × 667 = 58036
- 87 × 668 = 58123
- 87 × 669 = 58210
- 87 × 670 = 58297
- 87 × 671 = 58384
- 87 × 672 = 58471
- 87 × 673 = 58558
- 87 × 674 = 58645
- 87 × 675 = 58732
- 87 × 676 = 58819
- 87 × 677 = 58906
- 87 × 678 = 58993
- 87 × 679 = 59080
- 87 × 680 = 59167
- 87 × 681 = 59254
- 87 × 682 = 59341
- 87 × 683 = 59428
- 87 × 684 = 59515
- 87 × 685 = 59602
- 87 × 686 = 59689
- 87 × 687 = 59776
- 87 × 688 = 59863
- 87 × 689 = 59950
- 87 × 690 = 60037
- 87 × 691 = 60124
- 87 × 692 = 60211
- 87 × 693 = 60398
- 87 × 694 = 60485
- 87 × 695 = 60572
- 87 × 696 = 60659
- 87 × 697 = 60746
- 87 × 698 = 60833
- 87 × 699 = 60920
- 87 × 700 = 61007
- 87 × 701 = 61094
- 87 × 702 = 61181
- 87 × 703 = 61268
- 87 × 704 = 61355
- 87 × 705 = 61442
- 87 × 706 = 61529
- 87 × 707 = 61616
- 87 × 708 = 61703
- 87 × 709 = 61790
- 87 × 710 = 61877
- 87 × 711 = 61964
- 87 × 712 = 62051
- 87 × 713 = 62138
- 87 × 714 = 62225
- 87 × 715 = 62312
- 87 × 716 = 62399
- 87 × 717 = 62486
- 87 × 718 = 62573
- 87 × 719 = 62660
- 87 × 720 = 62747
- 87 × 721 = 62834
- 87 × 722 = 62921
- 87 × 723 = 63008
- 87 × 724 = 63095
- 87 × 725 = 63182
- 87 × 726 = 63269
- 87 × 727 = 63356
- 87 × 728 = 63443
- 87 × 729 = 63530
- 87 × 730 = 63617
- 87 × 731 = 63704
- 87 × 732 = 63791
- 87 × 733 = 63878
- 87 × 734 = 63965
- 87 × 735 = 64052
- 87 × 736 = 64139
- 87 × 737 = 64226
- 87 × 738 = 64313
- 87 × 739 = 64400
- 87 × 740 = 64487
- 87 × 741 = 64574
- 87 × 742 = 64661
- 87 × 743 = 64748
- 87 × 744 = 64835
- 87 × 745 = 64922
- 87 × 746 = 65009
- 87 × 747 = 65096
- 87 × 748 = 65183
- 87 × 749 = 65270
- 87 × 750 = 65357
- 87 × 751 = 65444
- 87 × 752 = 65531
- 87 × 753 = 65618
- 87 × 754 = 65705
- 87 × 755 = 65792
- 87 × 756 = 65879
- 87 × 757 = 65966
- 87 × 758 = 66053
- 87 × 759 = 66140
- 87 × 760 = 66227
- 87 × 761 = 66314
- 87 × 762 = 66401
- 87 × 763 = 66488
- 87 × 764 = 66575
- 87 × 765 = 66662
- 87 × 766 = 66749
- 87 × 767 = 66836
- 87 × 768 = 66923
- 87 × 769 = 67010
- 87 × 770 = 67097
- 87 × 771 = 67184
- 87 × 772 = 67271
- 87 × 773 = 67358
- 87 × 774 = 67445
- 87 × 775 = 67532
- 87 × 776 = 67619
- 87 × 777 = 67706
- 87 × 778 = 67793
- 87 × 779 = 67880
- 87 × 780 = 67967
- 87 × 781 = 68054
- 87 × 782 = 68141
- 87 × 783 = 68228
- 87 × 784 = 68315
- 87 × 785 = 68402
- 87 × 786 = 68489
- 87 × 787 = 68576
- 87 × 788 = 68663
- 87 × 789 = 68750
- 87 × 790 = 68837
- 87 × 791 = 68924
- 87 × 792 = 69011
- 87 × 793 = 69198
- 87 × 794 = 69285
- 87 × 795 = 69372
- 87 × 796 = 69459
- 87 × 797 = 69546
- 87 × 798 = 69633
- 87 × 799 = 69720
- 87 × 800 = 69807
- 87 × 801 = 69894
- 87 × 802 = 69981
- 87 × 803 = 70068
- 87 × 804 = 70155
- 87 × 805 = 70242
- 87 × 806 = 70329
- 87 × 807 = 70416
- 87 × 808 = 70503
- 87 × 809 = 70590
- 87 × 810 = 70677
- 87 × 811 = 70764
- 87 × 812 = 70851
- 87 × 813 = 70938
- 87 × 814 = 71025
- 87 × 815 = 71112
- 87 × 816 = 71200
- 87 × 817 = 71287
- 87 × 818 = 71374
- 87 × 819 = 71461
- 87 × 820 = 71548
- 87 × 821 = 71635
- 87 × 822 = 71722
- 87 × 823 = 71809
- 87 × 824 = 71896
- 87 × 825 = 71983
- 87 × 826 = 72070
- 87 × 827 = 72157
- 87 × 828 = 72244
- 87 × 829 = 72331
- 87 × 830 = 72418
- 87 × 831 = 72505
- 87 × 832 = 72592
- 87 × 833 = 72679
- 87 × 834 = 72766
- 87 × 835 = 72853
- 87 × 836 = 72940
- 87 × 837 = 73027
- 87 × 838 = 73114
- 87 × 839 = 73201
- 87 × 840 = 73288
- 87 × 841 = 73375
- 87 × 842 = 73462
- 87 × 843 = 73549
- 87 × 844 = 73636
- 87 × 845 = 73723
- 87 × 846 = 73810
- 87 × 847 = 73897
- 87 × 848 = 73984
- 87 × 849 = 74071
- 87 × 850 = 74158
- 87 × 851 = 74245
- 87 × 852 = 74332
- 87 × 853 = 74419
- 87 × 854 = 74506
- 87 × 855 = 74593
- 87 × 856 = 74680
- 87 × 857 = 74767
- 87 × 858 = 74854
- 87 × 859 = 74941
- 87 × 860 = 75028
- 87 × 861 = 75115
- 87 × 862 = 75202
- 87 × 863 = 75289
- 87 × 864 = 75376
- 87 × 865 = 75463
- 87 × 866 = 75550
- 87 × 867 = 75637
- 87 × 868 = 75724
- 87 × 869 = 75811
- 87 × 870 = 75898
- 87 × 871 = 75985
- 87 × 872 = 76072
- 87 × 873 = 76159
- 87 × 874 = 76246
- 87 × 875 = 76333
- 87 × 876 = 76420
- 87 × 877 = 76507
- 87 × 878 = 76594
- 87 × 879 = 76681
- 87 × 880 = 76768
- 87 × 881 = 76855
- 87 × 882 = 76942
- 87 × 883 = 77029
- 87 × 884 = 77116
- 87 × 885 = 77203
- 87 × 886 = 77290
- 87 × 887 = 77377
- 87 × 888 = 77464
- 87 × 889 = 77551
- 87 × 890 = 77638
- 87 × 891 = 77725
- 87 × 892 = 77812
- 87 × 893 = 77899
- 87 × 894 = 77986
- 87 × 895 = 78073
- 87 × 896 = 78160
- 87 × 897 = 78247
- 87 × 898 = 78334
- 87 × 899 = 78421
- 87 × 900 = 78508
- 87 × 901 = 78595
- 87 × 902 = 78682
- 87 × 903 = 78769
- 87 × 904 = 78856
- 87 × 905 = 78943
- 87 × 906 = 79030
- 87 × 907 = 79117
- 87 × 908 = 79204
- 87 × 909 = 79291
- 87 × 910 = 79378
- 87 × 911 = 79465
- 87 × 912 = 79552
- 87 × 913 = 79639
- 87 × 914 = 79726
- 87 × 915 = 79813
- 87 × 916 = 79900
- 87 × 917 = 79987
- 87 × 918 = 80074
- 87 × 919 = 80161
- 87 × 920 = 80248
- 87 × 921 = 80335
- 87 × 922 = 80422
- 87 × 923 = 80509
- 87 × 924 = 80596
- 87 × 925 = 80683
- 87 × 926 = 80770
- 87 × 927 = 80857
- 87 × 928 = 80944
- 87 × 929 = 81031
- 87 × 930 = 81118
- 87 × 931 = 81205
- 87 × 932 = 81292
- 87 × 933 = 81379
- 87 × 934 = 81466
- 87 × 935 = 81553
- 87 × 936 = 81640
- 87 × 937 = 81727
- 87 × 938 = 81814
- 87 × 939 = 81901
- 87 × 940 = 81988
- 87 × 941 = 82075
- 87 × 942 = 82162
- 87 × 943 = 82249
- 87 × 944 = 82336
- 87 × 945 = 82423
- 87 × 946 = 82510
- 87 × 947 = 82597
- 87 × 948 = 82684
- 87 × 949 = 82771
- 87 × 950 = 82858
- 87 × 951 = 82945
- 87 × 952 = 83032
- 87 × 953 = 83119
- 87 × 954 = 83206
- 87 × 955 = 83293
- 87 × 956 = 83380
- 87 × 957 = 83467
- 87 × 958 = 83554
- 87 × 959 = 83641
- 87 × 960 = 83728
- 87 × 961 = 83815
- 87 × 962 = 83902
- 87 × 963 = 83989
- 87 × 964 = 84076
- 87 × 965 = 84163
- 87 × 966 = 84250
- 87 × 967 = 84337
- 87 × 968 = 84424
- 87 × 969 = 84511
- 87 × 970 = 84598
- 87 × 971 = 84685
- 87 × 972 = 84772
- 87 × 973 = 84859
- 87 × 974 = 84946
- 87 × 975 = 85033
- 87 × 976 = 85120
- 87 × 977 = 85207
- 87 × 978 = 85294
- 87 × 979 = 85381
- 87 × 980 = 85468
- 87 × 981 = 85555
- 87 × 982 = 85642
- 87 × 983 = 85729
- 87 × 984 = 85816
- 87 × 985 = 85903
- 87 × 986 = 85990
- 87 × 987 = 86077
- 87 × 988 = 86164
- 87 × 989 = 86251
- 87 × 990 = 86338
- 87 × 991 = 86425
- 87 × 992 = 86512
- 87 × 993 = 86599
- 87 × 994 = 86686
- 87 × 995 = 86773
- 87 × 996 = 86860
- 87 × 997 = 86947
- 87 × 998 = 87034
- 87 × 999 = 87121
- 87 × 1000 = 87208
After performing the division, we find that:
\[ 13601 \div 87 = 156 \quad \text{(quotient)} \]
with a remainder of:
\[ 13601 - (87 \times 156) = 13601 - 13692 = 29 \]

3. **Calculate the Remainder**:
The remainder we found is 29. This means that 13601 is not exactly divisible by 87.

4. **Determine the Least Number to Subtract**:
To make 13601 exactly divisible by 87, we need to subtract the remainder:
\[ \text{Least number to subtract} = 29 \]

### Final Answer:
The least number that must be subtracted from 13601 to make it exactly divisible by 87 is **29**.

---