Answer:
125 times bigger.
Explanation:
A great way to visualize this problem is to think of it as a volume problem itself. Another good way to think about it is to plug in numbers in its place.
Way #1
5*5*5 (or 5^3)=125
Way #2
(2*2*2)=8
(2*5)*(2*5)*(2*5)=1000
1000/8=125