. 1, different references; Count: know. From the word, from ten. "Word" has a number of meanings (shǔ)； incarnation); "Ten" is an integer, which means that things become a number. Calculation: according to the known number, the unknown number is obtained by mathematical method.
2. Different references; Count: Counting numbers, so it means counting. Original accounting, total; Do the math. Calculation: Ding Ling's mother: "Grandma was not too smart when she was young, but her husband was more calculating." She persuaded around to buy some exquisite smoking sets, and sweet words dragged her in. Contract is an objective requirement to adapt to the private ownership of commodity economy and a legal form of commodity exchange. After commodity production, people have gradually formed many habits and rituals about exchange in the long-term exchange practice for the sake of safety and credibility.