How does the zero or double zero give the advantage to the house?

If you have ever observed a roulette table, you know that it is made up of 36 numbers, divided between the colors black and red. But there is also a single number that differs from this set: the green zero. The green zero is nothing more than the absolute win for the casino. When the ball lands in this position, all bets that were placed by you and the other competitors are lost and the profit goes to the betting company.