calculate
verb [ T ]
uk/ˈkælkjəleɪt/ usto find an amount or number using mathematics:
calculate according to/based on/on the basis of Their pension will be calculated on the basis of their earnings and length of service.
calculate that It has been calculated that the economy shrank by 2% last quarter.
to form an opinion about something:
They are already in the lead and are calculating that, in all probability, they will win the election.