For the first part of your question, those are likely your bonus. You should get those when you finish a ball. With the numbers doubling, you can have different combinations to equal any number: 9 would be 8+1. 12 = 8+4, 13 = 8+4+1, etc. I think there’s something to the two sides, perhaps with the rabbits and ducks, to decide which one you get when the ball drains. Not sure.

Looks like he red ones multiply everything, but I’m not sure what activates them, either. Might not multiply the bonus...

Jeff