Odds are there to tell you how much money you will win. They're basically examples so that each user can calculate their own individual returns based on the amount they're willing to stake. For example 2/1 is an example – if you were to stake £1 you will win £2. Below are a few examples to show how the calculation works:
New Customers Only. Deposit and stake £5 on Lotto for £10 in free bets. The free bet is credited within 24 hours and is not included in any returns. Unspent balance of free bets will expire after 7 days. Additional conditions apply.