(mathematics) the four basic arithmetic operations; addition, subtraction, multiplication and division

triumphant, proud / skilled

strong point / triumph / regular customer

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

to calculate

(mathematics) A procedure for generating a value from one or more other values; operation.

regular costumer; patron

(colloquial) current boyfriend