`(-27) xx (-16) +(-27) xx (-14) = ?`

What should come in the place of question mark (?) in the following questions ? (16 xx 32)/(9 xx 27 xx 81) = ?

32 xx (27 xx 19) = (32 xx _____ ) xx 19

Simplify each of the following and express the result as a rational number in standard form: (-9)/(16)xx(-64)/(-27) (ii) (-50)/7xx(14)/3

(27xx4-13xx6)/(25-:5xx2)=

Simplified value of (8.73 xx 8.73 xx 8.73 + 4.27 xx 4.27 xx 4.27)/(8.73 xx 8.73 -8.73 xx 4.27 + 4.27 xx 4.27) is :

Calculate : 9^(-3)xx((16)^(1/4))/(6^(-2))xx((1)/(27))^(-4/3) .