psephizo is used for working out an amount, whether resources needed for a project or a stated number.

The attested use concerns reckoning an amount: resources needed to finish a tower in Luke 14:28 and the number of the wild animal in Revelation 13:18.

1. Reckoning an amount or number · dominant

   In Luke 14:28, the present active indicative singular form occurs in the question of sitting down before building a tower and determining whether there is enough to complete it; the APB renders the clause "calculate the cost." In Revelation 13:18, the aorist active singular form is used in the instruction concerning the wild animal's number; the APB renders "calculate the number of the wild animal."

   Luke 14:28Revelation 13:18

In the Anselm Project Bible: The APB uses "calculate" in both clauses, once for a tower's cost and once for the wild animal's number. These renderings confirm the verses' overall reckoning contexts rather than isolate every detail of the term.