Hi,
I would like some help to calculate affiliate commission in an Excel file.
This will be for a website that sells ebooks with a 5-tier affiliate
tracking program. Suppose the price for 1 ebook is $1. And suppose I pay
each affiliate $0.05
I know how to create simple formulae in Excel but just can't figure out this
one. Especially when you are trying to simulate selling 1000 ebooks a month,
it gets hard.
What I had so far, was:

T1 1 x 0,05 = 0,05
T2 5 x 0,05 = 0,25 (5 = 1 x 5)
T3 25 x 0,05 = 1,25 (25 = 5 x 5)
T4 125 x 0,05 = 6,25 (125 = 25 x 5)
T5 625 x 0,05 = 31,25 (625 = 125 x 5)
---- ------
781 39,05
0,25
-----
195,25

OK, if someone could spend a moment to get me on my way, I'd appreciate it.
Thanks,
Will.