Ok here is some more information as requested.
For example in the race track dropdown there would would these fields, Ascot, Wolverhampton, Lingfield etc
If a user selects Wolverhampton then in the fields for the
Row 1: 3,2,2,3,3,2
Row 2: 1,1,2,0,1,1
The the % box would be filled with 8.75
I would input these values if you could give example, these values will never change and be preloaded.
that is for one drop down, its pretty much the same for the rest of the dropdowns.
At the very bottom the calculation is simply Row 1 each column header calculated and totalled up and then the same for percentage and Row 2.