How does each-way payout work?
Say you bet £10 each-way at 8/1 with 1/4 odds the first three places. Your total stake is £20. If the horse wins, you collect: £10 × 8 + £10 + (£10 × 8/4 + £10) = £100 returned. If it places (finishes 2nd or 3rd), the win half loses but the place half returns £10 × 2 + £10 = £30. If it finishes 4th or worse, you lose all £20.