(n.) One who reckons or computes; also, a book of calculations, tables, etc., to assist in reckoning.

CA CPA abacist accountant general actuary amanuensis archivist auditor bank accountant bank examiner bookkeeper bursar calculator cashier cashkeeper certified public accountant chamberlain chartered accountant clerk comptroller computer controller cost accountant cost keeper curator depositary depository documentalist engraver estimator figurer filing clerk financial officer journalizer librarian liquidator marker notary notary public paymaster prothonotary purse bearer purser receiver reckoner record clerk recorder recordist register registrar scorekeeper scorer scribe scrivener secretary statistician stenographer steward stonecutter timekeeper treasurer trustee