When you say you have roudned the three variables ... where and when did you round them?? What's the exact expression for each of the three variables .. and what's the exact expression used to print the variables?

In the textbox of variable definitions:
where :
Tsum1 is: round(fieldx,2)
Tsum2 is: round(fieldy,2)
Tsum3 is: round(fieldz,2)

Then, in the data group band of the report I print:

round(Tsum3,2)/(round(Tsum2,2)-round(Tsum1,2)) && In a Textbox

Thanks
Carlos Burgos