Basically, if something is 2.0 and you put £1.00 on it, you're gambling your £1.00 to make £1.00 in return, so if your bet wins, you receive £2.00 (winnings plus original stake).
2.50? £2.50 from £1.00.
£10.00 at 6.4? £64.00, with £10.00 of that £64.00 being your original stake/risk.
I always...