Ko te whai i tētahi ara hei whiriwhiri i te otinga o tētahi paheko tau. Ko te whakapuaki, ko te ine, ko te tatau, ko te whiriwhiri rānei i tētahi rahinga, i tētahi uara ā-tau rānei.
Following a procedure to work out the answer to a number operation. Expressing, measuring, counting or working out an amount or numerical value.