For example, suppose you are playing with 10 Euro and you want to make 200 euro profit. You start by putting 10 euro on red. If you win, you have 20 euro to play with. You then bet on black and win again, making your total profits 40 euro. Now you put your 40 euro on a dozen (1-12) and you win again, making your total profits 120 euro. You then put everything on red, you win and you have made 240 euro
If you lose you go back to placing your starting bet only?