What is a good way to calculate how much is actually getting taken in fees using Phoenix Miner.

I was thinking just ignore the "every 90 minute, mines for 35 seconds" aspect. That is just Phoenix Miner telling us how they obtain the 0.65%.

Then just do the following math:

I mined 1 ETH in x amount of days running Phoenix Miner steadily... Now just subtract whatever 0.65% of 1 ETH is from 1 ETH.

Sorry to sound so dumb, but if someone can tell me how to do some math on this that would be great.