due analysis reports

I have a Posting date ,0calday,doctype,amount field in the ARcube.

During runtime User can enter the 0calday-current date

no ofdays based on that current date -posting date I have to caluclate no of days

Report format is

posting date docutype amount no of days 0-30 31-60 61-90 91-120

How can I build report like this and calulating 0-30 to 91-120 values

Advance thanks