Garry is doing it with three selections in BA but in a two step process, greening up the two selections first and then the last one.
Garry can you explain the maths?
A small correction that you can make:
The "correct" formula is:
Stake = (Abs(Profit)+LowProfit) / odds = £6.42
and not
Stake = Abs(Profit)+LowProfit / odds = £6.42