Trying to create an accurate monthly bonus calculator

I've noticed that most monthly bonus calculators out there seem a bit off, so I wanted to take a crack at refining the formula Stake uses to determine payouts. My goal is to get as close as possible to the real calculation.

If you're up for it, I'd love for everyone to share a screenshot of their monthly stats along with the games you typically play (slots, keno, dice, etc.). As well as your VIP level. Then, once the bonus drops, let me know how much you actually received.

With enough data, we might be able to figure out a more accurate formula and help everyone get a better idea of what to expect each month.