How on earth did you calculate the OP would ever make $400 to $600?
I didn't calculate anything. He asked a stupid question, so I gave a stupid answer!

Maybe a little too subtle.

My response is if you have 20 computers try it and find out, if you don't try one computer and
multiply by 20.
As far as abusing company/school resources, go for it. The response from IT should be interesting.
Be sure to tell us all about it.