Custom Column/Table based on another table

I could use some help trying to figure out how to...properly count/aggregate data from two tables.

Let's say I have a table called SoftwareInstalled, similar to this:

And I have a Target table like this:

I'd like to add a calculated column or create some (aggregate?) table that gives me this:

I'm pretty new to PowerBI, and I've tried searching for some pointers/tutorial that points me in the right direction, but no luck so far.  Is this doable in PowerBI?