Unable to count by multiple fields in Report

[Qino]

I've had great difficulty getting my report to provide a breakdown of totals by three fields, and calculate the final field. I can get a total count no problem, but several dead-ends and now I need a push in the right direction:

I have this:
Type Quality Size
20 A 22x22
20 A 22x22
20 A 33x33
20 A 22x22
25 A 22x22
26 A 22x22
26 Z 22x22

I need this:
Type Quality CombinedSize
20 A 1452sqft 3pc
20 A 1089sqft 1pc
25 A 484sqft 1pc
26 A 484sqft 1pc
26 Z 484sqft 1pc

I need the breakdown sorted by Type, then Quality then Size and then report the count for those items.

Any gentle nudges will be welcome.

Qino

 

[Qino]

About 3 hours after I posted I ran a second query on the same data which totaled exactly as I needed and did the calculated field. I just added it to the report as a sub-report. It seems so obvious now.