Hi TO,

I made some simple mistakes in my explanation (too tired last night when I put it together!).

Obviously the bet amount needs to be deducted from the return. So it should read if we bet $4 @$3.50 we collect $14 (less the $4 bet) so we win $10. Our bank would be $42 + $10 = $52, but as we are now up to bet 55 our next aim would be 55 - 52 = $3.