What is the value of 4 to the power of 3 divided by 2 to the power of 3

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Find the solution of each of the following.