In fact, this is one of the varieties of the bet-express, which includes two outcomes – the victory of the horse (this bet is especially popular at the races) and it’s taking the prize.
Let’s say that BC proposes to bet on the victory of the favorite horse with a coefficient of 1 to 1 (for one hundred pounds you get a prize of one hundred pounds). But you can still bet “Each Way ¼ 1-2”. This means that you can bet not only that the horse will come first, but also that it will come second, but at the same time you get only the fourth part of that win, as if the horse came first. Since the office considers this bet as two forecasts together, it offers the player to double the amount of the bet. That is, instead of 100 to put two hundred.