You likely will want to use report, maybe teamed with a query.
You can filter the data from one or more tables (I believe your data
should be in more than one table if it is properly normalized) so you have
only successful sales listed. Then you can group the data by sub products
and total each sub project and have a grand total.
Note: I don't know how experienced you are with Access. It does have a
steep learning curve. The first few projects tend to take a while and may
be a little frustrating at first. You may want to take a look at the
Northwind example that comes with Access.
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