Calculating relates to computing and recording statistical, accounting, and other numerical data.
-see also:
"Calculating" is in the CPC Code "4513"
Calculating machines; accounting machines, cash registers, postage-franking machines, ticket-issuing machines and similar machines, incorporating a calculating device
"Calculating" is in the HS Code "8470"
Calculating Machines, Accounting Machines, Cash Registers, Postagefranking Machines, Ticket-Issuing