You searched for: “numeration
numeration (s) (noun), numerations (pl)
Calculations or processes of tallying, reckoning, or assigning a quantum to something: Numerations involve a system of reading or naming numbers: especially, those written decimally and usually according to the Arabic numerals.

Numeration can be an action, a process, or a result of ascertaining the number of people, etc., in a specified category.