Say a single-number bet has a 35:1 payout, and you betR$1. If you win, you'll get your money back plusR$35. Another example: If you win aR$100 bet (for a 35:1 payout), you get a total of $3,600 ($3,500 profit plus theR$100 you initially bet).
According to the roulette payouts chart, the highest paying bet in the game is on a single number, offering a 35:1 payout. The odds of winning however are pretty slim. The more numbers you add to the bet, the lower the payout will be compared to the size of the wager.