ἀρίθμησις
From LSJ
Εἴκειν δ' οὐκ ἐπίσταται κακοῖς → You don't know how to yield to your misfortunes
English (LSJ)
εως, ἡ,
A counting, reckoning up, Hdt.2.143, Str.9.5.3, POxy.1258.7 (i A. D.), Plot.4.4.11; counting out, payment of money, IPE12.32B35 (Olbia). 2 account, BGU328i24 (ii A. D.), etc. II = ἀριθμητική, ἡ, Hp.Ep.22.
German (Pape)
[Seite 351] ἡ, das Zählen, Aufzählen, Sp.