If you did that, you'd get:
Yearly returns of 1 btc: 0.27135155316606935 btc
for bustabit, and:
Yearly returns of 1 btc: 0.314836086262803 btc
for bustadice.
Wow, that was really a good income from both bustabit and bustadice. I was planning to invest on it but doesn't know how to calculate possible return this was really helpful for me.