You would, at that point, lose the entire 200k in just a few seconds. Hi, thanks for asking! Yes, you can bet on zero in roulette. That goes for both European and American variants.
The probability of the ball landing on the number "Zero" in a standard European roulette wheel is 1/37, or approximately 2.7% of the time. This is because there are 37 numbers on the wheel, including the single "Zero" pocket.