Form Field Calculations

I've create a huge order form with 500+ entries. The calculation is pretty simple.
I checked the field calculation order to find that my fields aren't adding up in the correct order.
(I named the fields in alpha and numeric order to avoid this and it still happened) Is there an easier way to re-organize the field calculation order?. I would have to scroll up and down 500+ titles to accomplish this. IS there a quick fix to this problem?? I need this resolved ASAP and am desperate for a solution.

Thanks