Thank you for the replies.
In a fit of frustration, I went and redid the queries and everything in the last hour or two, lost track of time. And tried again.
This is working!
=(DLookUp("Count_TRADE","qry_EMPTY_HRMS_COUNT","[TRADE] = 'AVN'")/DLookUp("Count_MOC","qry_HRMS_COUNT_REG","[MOC] =...