I thought I was done but some other problem came up. What I'm doing is adding up cells to get a value x then adding another set of cells to get value y. I want to do this calculation x/y but getting the error because x is zero therefore won't compute.

=(January!F47+February!F47+March!F47+April!F47+May!F82+June!F102+July!F67+August!F72+September!F62+October!F47+November!F42+December!F42)/(January!G47+February!G47+March!G47+April!G47+May!G82+June!G102+July!G67+August!G72+September!G62+October!G47+November!G42+December!G42)

This is what I have. I'm trying to figure out what I need to add to this equation to make that happen. I think I need do an IF statement stating if the value is >0 then calculate, if it doesn't then put a blank. This is important because lets say JanF47 is 1 but FebF47 is 0, the computation is not allowed. Also, on the bottom side of the division...if JanG47 is 1 but FebG47 is zero...doesn't like the calculation. I want the calculation to ignore the zeros.

Hope you understand what I'm asking. I'm going to try several things to see if it will work. Thanks again for your help.

Jason