如果您来自美国，您会在较大的数值中间放置逗号来表示千和百万(等等，每三个数值使用一个逗号)。

If you're from the United States, you place a comma in large Numbers to designate thousands and millions (and so on up for every three digits).

youdao

youdao

数千人曾顶着冰冷的雨表示他们的支持。

Thousands have braved icy rain to demonstrate their support.

《柯林斯英汉双解大词典》

And the prefactor is 96.3 3 when you want to get a result in kilojoules per mole.

当使用千焦每摩表示键能3,时前因子为96。

麻省理工公开课 - 固态化学导论课程节选