IPA: /ˌkæl.kjʊˈleɪ.ʃən/
KK: /kælˈkjuːleɪʃən/
The process of using mathematics to find an answer or to make a decision based on numbers.
The calculation of the total cost took longer than expected.
Calculation → It is formed from "calculus" (from Latin, meaning a small stone used for counting) and the suffix "-ation" (indicating a process or action). The word "calculation" refers to the process of counting or computing using numbers.
Think of small stones used for counting ('calculus') to remember that 'calculation' is the process of counting or computing.