IN + CULCATE (calculate). IN school, teachers inculcate (teach) the students how to calculate.
Relate it to In-Cultivate..Just like the farmers cultivate the farms in their fields Teachers cultivate (or INCULCATE)knowledge into the students brains.
Inculcate: in + school + educate
INCa CUL(kal) CATe(CAT exam) ka paper hai
inculcate can be arranged to be calculate and to calculate in the calculator we must give the values