Java'ish Return?

[Maull]

And now this is my 3rd post in this forums since I registered a few hours ago.

HOW IS VB / EXCEL SO HARD! *cry*

Pseudoishcode

Sub My_Sub()
     Call Return_Percent(5, 10)
     RETURN IS PASTED INTO CELL A1 ON SHEET 1
End Sub

Sub Return_Percent(X, Y)
     X*Y=Z
     Return Z
Sub End

Second Sub has been asked in another thread so that's not so important

What I am after is a generic method/sub that can take a a few simple variable's and return something that can be pasted into a cell.

What I am trying to do is build my own API that can be used by idiots, (EG Managers)