Thanks, AccessBlaster, I was hoping it would be simpler, but, I guess changing the formula to this works:
=IIf(Nz([SumOfBaseline Qualified Developer]),IIf(Nz([SumOfOracle_Qual_Dev_Charge]),[SumOfOracle_Qual_Dev_Charge]/[SumOfBaseline Qualified Developer]),0) I just have to change 10 formulas...