how do I put 2 separate sums into 1 cell?

[bugmenot]

Hi all,

I have a listing of numbers in different catagories such as the following:

Type A:
1

Type B:
2


Type C:
4

Total:
7

I want to be able to have a cell automatically calculate to say:
Type A:
"(1/7)"

Type B:
"(2/7)"

Type C:
"(4/7)"

with that exact formating.

Any advise?