Thanks Dr Pangloss,
I wish to use a formula in my spreadsheet where I am attempting to set up a plan to bet Quinellas. I intend to dutch some runners. I have set up a sheet already to do Trifectas and this required a complex formula consisting of the multiplication and division of Horses 1, 2 and 3. I assume there is also a formula to work out the Quinellas comprising the use of the prices of runner 1 and runner 2, as is the case with Trifectas. This is what I'm looking for.
I was hoping some forum members have already set up such a sheet so that when I update the start prices, I can work out an approximate Quinella return for the runners I select. I can't see how I can get this information from the method you suggest. Do you have any other thoughts that might assist me.

Thanks for your reply.
Kind regards,
Ralf