Yes, it looks like you are working with powers (the little numbers by the larger number) I assume you now multiplication if you are working on this so here is how you solve those problems. For my example, I will use problem (i)
You start with the numbers with powers so the first 4 a power is just a number multiplied by itself that many times. So you end up with
(4 x 4) x (4 x 4 x4) x (5 x 5 x 5)
----------------------------------------------
4 x 5
multiply inside the parithesis to get
16 x 64 x 125
-------------------
4 x 5
multiply across to get
128000
------------
20
then divide leaving you with the answer
6400
Hope this helps!
