I don’t undestand because you need use brute force when is a simple combinatory calculus…maybe i not undestand problem. First spin is 100%. Second spin has 97% ( 37 /38 are good numbers ) and third has 92%…one can be repeated but for reach 7 spins the % need decreasing…if not this roulette is over.
It is a little trickier than that. If you want to solve it with combinatorics, you might take a look at this: