definition of
calculation

[1] #1 calculation n. [computation, computing] the procedure of calculating; determining something by mathematical or logical methods. wn

[2] #2 calculation n. [computation, figuring, reckoning] problem solving that involves numbers or quantities. wn

[3] #3 calculation n. [deliberation] planning something carefully and intentionally; "it was the deliberation of his act that was insulting". wn