Time Entries

In the reports features, we can run a report with time entries.  All of the other reports I have access to allow me to create custom fields with formulas. Is there a way to create a field with a formula on the time entry reports?  

I need to take the time entries and have the user, category, and project and then divide it by 8 or 7 depending on the person.  I would love not to have to export it to Excel to do so. 

Matt