To calculate the potential payout of a winning round robin bet, first determine the number of selections you are including and the type of parlays you want to create (e.g., doubles, triples). A round robin bet combines multiple selections into smaller parlay bets; for example, if you choose three teams, it will create three doubles (2-team parlays). Next, for each parlay, multiply the odds of the selected teams together and then multiply that result by your stake for that parlay. After calculating the payout for each parlay, sum them up for the total payout. Be sure to include your original stake in the final payout amount to determine total returns.