32 divided by 4 is 8.
320 divided by 4 is 80.
To get from 32 to 320 all you need is a 0 at the end, so you can just add the 0 the end of the answer. This means you're going from an 8, to an 80.
OR
Another way you can look at it is 32 multiplied by 10 to get 320. So you need to mutiple your answer by 10 to get the right answer.
32*10=320
8*10=80
Hope this helps!