Multiply 287 by 19.

Answer

To multiply 287 by 19 step by step, we can follow these calculations:

### Step 1: Break down the multiplication
We can break down the multiplication of 287 by 19 into two parts:
- Multiply 287 by 9
- Multiply 287 by 10 (which is the same as multiplying by 1 and then adding a zero)

### Step 2: Multiply 287 by 9
1. **Calculate 9 x 7**:
- \( 9 \times 7 = 63 \)
- Write down 3 and carry over 6.

2. **Calculate 9 x 8** (plus the carry):
- \( 9 \times 8 = 72 \)
- Add the carry: \( 72 + 6 = 78 \)
- Write down 8 and carry over 7.

3. **Calculate 9 x 2** (plus the carry):
- \( 9 \times 2 = 18 \)
- Add the carry: \( 18 + 7 = 25 \)
- Write down 25.

So, \( 287 \times 9 = 2583 \).

### Step 3: Multiply 287 by 10
- \( 287 \times 10 = 2870 \)

### Step 4: Add the two results
Now, we need to add the results from Step 2 and Step 3:
- \( 2583 + 2870 \)

1. **Add the units place**:
- \( 3 + 0 = 3 \)

2. **Add the tens place**:
- \( 8 + 7 = 15 \)
- Write down 5 and carry over 1.

3. **Add the hundreds place**:
- \( 5 + 8 = 13 \)
- Add the carry: \( 13 + 1 = 14 \)
- Write down 4 and carry over 1.

4. **Add the thousands place**:
- \( 2 + 2 = 4 \)
- Add the carry: \( 4 + 1 = 5 \)

So, \( 2583 + 2870 = 5453 \).

### Final Answer
Thus, \( 287 \times 19 = 5453 \).

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