It's really the multiplication and in this case, division that the problem arises. Yeah?

这里实际上是乘法和，除法引起了那个问题，请说？

哈佛公开课 - 计算机科学课程节选

But what I do? I just separated, do I do the addition first or do the multiplication first?

那么我该怎么办？我就是要做一个分割，应该先做加法呢,是先做乘法呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

One of the first principles of probability theory is called the multiplication rule.

概率论的最基本的原则,有一条叫乘法原理

耶鲁公开课 - 金融市场课程节选

n It takes discrete values, multiples of some integer n, and the multiplication factor is the ratio of the Planck constant divided by 2 pi where n takes one, two, three and so on.

这些离散的值乘以整数，乘积因子,是普朗克常数除以2π,其中n可以取1，2，3，等等。

麻省理工公开课 - 固态化学导论课程节选

STUDENT: Standard order of operations, I guess take the multiplication first, and add the three.

学生：标准运算符的顺序，我猜是先做乘法，然后再去加3。

麻省理工公开课 - 计算机科学及编程导论课程节选

And so, in fact, if I wanted the other version of it, in fact, if I do this right, 23 it's going to give me 23 because it does the multiplication first, if I wanted the other version of it, Python I need to tell it that, by using, excuse me, parentheses.

因此，实际上，如果我想换种做法，实际上，如果我去执行这个表达式，返回值是3,因为乘法会被优先执行，如果我需要换种做法，我需要告诉，用括号来告诉它。

麻省理工公开课 - 计算机科学及编程导论课程节选