Is it possible to earn 7500 chips with 8 luck?

Which games do I have to play?

I lost 200 chips in the slot machine... didn't win anything! (So I reloaded a save ..)

At this rate I'm never going to break the casino

(Another question, are the winnings cumulative? ie if in order to win 7500 I also lose 6000 on the way, would it still count?)