If you describe someone as calculating, you disapprove of the fact that they deliberately plan to get what they want, often by hurting or harming other people. 精明的; 会算计的
adjective [原级]精明的,精于算计的
Northbridge is a cool, calculating, and clever criminal who could strike again. 诺思布里奇是个冷静、精明、机灵的罪犯,他有可能再犯。
verb [vt. 及物动词]计算;预测(calculate 的现在分词形式)
I think you have made an error in calculating the total. 我想你在计算总数时出了差错。