calculating (adj.)

1710, "carrying out calculations," present-participle adjective from calculate (v.). The meaning "given to forethought and shrewdly or selfishly seeking advantage, scheming," is attested from 1802.

calculating (n.)

1710, "calculation," verbal noun from calculate (v.). Calculating-machine "mechanical computer, machine which performs mathematical calculations" is from 1830 [Babbage].