to reckon;  to calculate; to compute;  to work out;   (nghĩa bóng) to consider pluses and minuses;  to weigh the pros and cons
To calculate expenses;  To work out expenses
Turn off the television! Take care not to miscalculate!
Don't worry! I have it all worked out!
calculation
According to my calculations/in my estimation, he will be present before 9 am
self-interested;  self-seeking;  calculating;  scheming
His offer of help was free of all calculation
She's very calculating, she does everything out of self-interest.