It's hard enough picking winners of this weekend's main attractions, Newmarket's 1000 Guineas and 2000 Guineas, without having also to grasp the turf's idea of sound maths. So for anyone planning their first trip to the track, a guinea - named because the gold used to mint them back in 1663 came from the then named Guinea, in Africa - is worth £1.05. So you'd imagine prize money for the 1000 and 2000 Guineas is £1,050 and £2,100, respectively. Except prize money is £300,000 for each race.