supputatio
From LSJ
τὸ δὲ μέλλον ἀκριβῶς οἶδεν οὐδεὶς θνατὸς ὅπᾳ φέρεται → but as for the future no mortal knows for certain where he is bound
Latin > English (Lewis & Short)
suppŭtātĭo: (subp-), ōnis, f. id.,
I a reckoning up, computation, Vitr. 3, 1 med.; Arn. 2, 93: temporum, Aug. Civ. Dei, 18, 36: stadiorum, Mart. Cap. 6, § 609.