Decimal odds explained\n\n For example, aR$100 bet made at decimal odds of 3.00 would returnR$300 ($100 x 3.00):R$200 in profit and the originalR$100 amount risked. AR$100 bet made at decimal odds of 1.50 would returnR$150:R$50 in profit and the originalR$100 amount risked.
What 20-to-1 means: When you see 20-to-1 odds, you're looking at a long shot that is unlikely to win. In fact, the implied win probability for a team that's 20-to-1 is 4.76%. However, should that long shot come in, it would pay out $20 for everyR$1 wagered.