You searched for: “computability
computability (s) (noun), computabilities (pl)
1. The facility to make a calculation or reckoning by purely mechanical means: Little Tommy tried out the computability of his abacus to finish his math assignment.
2. The capability of a computer or calculator to make estimations or do accounting: In order to figure out and organize her payments, Joan was convinced of the computability of her laptop to get perfect and satisfactory results.