Look up online "equation calculator" and it should be the first one to appear, "Symbolab" supper easy way to help you with problems!
Answer:
100
Step-by-step explanation:
160 * (5/8) = 100
The fastest way is to just use a scientific calculator.
To do it without a calculator, use prime factorization.
I'll only do the second one which is the answer.
27 x 8
= 3^3 x 2^3 = 6^3
Which is a perfect cube.