The maths i used are something Bhagwan posted years ago that i remember.

The idea was to use the maths to place a 4 horse parlay on different races as most tabs only let you do it on the one venue.

Testarosa used a similar idea but placed his bets manually but using the 4 horse parlay or similar.

So what we have is a rolling set of bets that never ends, because this is not a strict 4 horse parlay you can decide on the amount you would bet for your parlay lets say 110 and because each new bet starts a new set of 4 races you would put 60% of your new bet plus all accumulated winnings on the next bet.

Now because this is continuous we need some points where we collect winnings, i should be able to make an excel sheet to do this all you would need to do is put in a starting amount and winning prices.