vividiah 0 Junior Poster in Training

I will create a special program to display the report.
Here I use the Crytal Report to support it,
report issued later it was also through the process of calculation, because the report is a report INCOME / turnover of my company,
after I retrieve data from a database, I would process the data through the calculation process, the result is a new report was already complete contents.
I'm here to ask for a solution, how should I put the calculation process?

regards,
Vivi Diah