n.

1. 計算[U]
   Did I make any error in my calculation?

   我計算中有沒有出差錯？

2. 計算結果[C]
   The scientist's calculations proved exactly right.

   那位科學家的計算結果完全正確。

3. 估計，推測，預測[U][C]
   By my calculation, 5% of the students will fail in the exam.

   據我估計，百分之五的學生不能通過這次考試。

4. 深思熟慮；盤算[U]
   After much calculation they decided to give him the position of manager.

   經仔細考慮，他們決定讓他擔任經理職務。

n.

1. a mathematical determination of quantity or extent.
2. an assessment of the risks or effects of a course of action.