Combine all the income resources together and come up with your answers in general.
Ways to make money:
- Building Output
- Attacking Rivals
- Robbing Rivals' Money
- Buy Money From GREE (really want to see who has done this one)
For me, I have really low IPH, so I rob a lot and I admit that I'm quite a stalker..... (not ashamed)
Combine all those above, it usually take me 4-5 days to make 100 millions dollars.