WordNet: calculator, computer, estimator, figurer, reckoner

an expert at calculation (or at operating calculating machines)

• hypernym expert

• hyponym adder

• hyponym number cruncher

• hyponym actuary, statistician

• hyponym subtracter

calculator

• (englanti) calculate (derivationally related)
• (suomi) laskija (synonyymi)

computer

• (englanti) computerise (derivationally related)

• (englanti) compute (derivationally related)
• (suomi) laskija (synonyymi)

estimator

• (englanti) estimate (derivationally related)
• (suomi) laskija (synonyymi)

figurer

• (englanti) figure (derivationally related)
• (suomi) laskija (synonyymi)

reckoner

• (englanti) reckon (derivationally related)
• (suomi) laskija (synonyymi)