All betting odds on BETDAQ are displayed by default in decimal as opposed to fractional format.
For those who are more used to the older style fractions, this means that 6/4 is presented as 2.5, 4/1 as 5.00, and so on.
To mentally calculate your return on a bet, simply multiply your stake by your odds. £100 at 2.50 would therefore return £250. £20 at 5.00 would return £100.