um jogo para ganhar dinheiro
This means you will be paid for your win part of your bet at the odds chosen when you placed the bet and for the place part of your bet at 1/4 of your odds. Please note that deductions might apply if there was a non runner in the race.
Winnings on show bets are unlimited and based on the odds when the gates break open, signaling the start of the race. Payoffs are calculated by the total pool less the track's takeout (basically commission), then divided among all the winning tickets.