If your gona play roulette wheel,
you bet on the 2 to 3 bets.
like $1 on 2nd-12 and $1 on 3rd-12
if you win (2 to 3 odds you will) you get $1
if you lose, you redo the bet, but you triple the bet amount.
that is so you win back your loss.
you need at least $4500 to cover the triple times betting,
at least 8 times. So your betting that the 1st-12
will not come up 8 times in a row.
which only happens very rarely.
1 -1
3 -2
9 -3
27 -4
81 -5
243 -6
729 -7
2187 -8
6561 -9
warning: only gamble what you can afford to lose!