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I haven't looked at the source code yet, otherwise i would have given you the exact formulas. This article took me about 3 hours already, going through the source code is an 8 hour project for a later time ;)

if I have 100 steem power and I get $.02 and does that mean if I had 1000 Steem power I would get a bigger reward in the same circumstance?

To my understanding, yes.

yep, probably $.20