計けい算さん者しゃ

noun

human computer; person who calculates

Refers to a person performing calculations, especially before electronic computers. Often used historically or in contrast to machines.

• 昔むかしは計けい算さん者しゃが手て作さ業ぎょうで膨ぼう大だいなデータを処しょ理りしていた。

  In the past, human computers processed vast amounts of data by hand.