URL: http://forums.ozmium.com.au/showthread.php?t=1821
Username: Equine_Investor
Date: 25/10/2002

Rule 1: You need the Sportsman (or similar) giving the total prizemoney for each race your horse has competed in.
Rule 2: You allocate prizemoney from that race on lengths from winner. [For example, if your runner won the race of $100,000 prizemoney you give him $100,000. If your runner ran third by 2.5 lengths, you give him $100,000 divided by 2.5 = $40,000. If your runner ran 8th 9.6 lengths behind the winner you allocate $100,000 divided by 9.6 = $10,417 (rounded up).]
Rule 3: You then add up all the prizemoney from every runner in today's race. You divide your runners total prizemoney (calculated by you) into the total of the field. Anything above this price is "overs".

Equine_Investor comments: "Play around with it, you may be surprised at some results etc.
"Any input positive or negative (constructive) welcome.
"Bear in mind it's the rough workings of a raving lunatic with too much time on his hands and there are other factors which should also be considered."