Thank you very much for your reply and calculations. It helps a lot. The witness I spoke to said the reward pool can change a bit here and there because it continuously is moving trough time. I can understand that. It's not really hard fixed per week, so, for example, a downvote now can have some ripple effect later on. (at least that's how I understood it). But I'm happy to read the average of newly created STEEM was at least in the same vicinity of my own calculations. Thanks again!