With some clever mechanical tricks, the Step Reckoner was also able to multiply and divide numbers.

利用一些机智的机械技巧 莱布尼茨乘法器也能够乘数和除数。

Interestingly, you may have noticed that there are no multiply and divide operations.

有趣的是，您可能已经注意到没有乘除运算。

And he noticed that as the cells would multiply and divide, it would go into some of the new cells but not the others.

他注意到随着细胞的繁殖和分裂，它会进入一些新细胞而不是其他细胞。

" To crunch the numbers" is an informal expression meaning to make or do the calculations – to add, subtract, multiply, and divide what you need to, to find the answer.

“计算数字” 是一个非正式的表达方式， 意思是进行或进行计算——加、减、乘、除你需要做的， 以找到答案。

In the 17th, 18th, and 19th centuries, many mechanical calculators were developed, though with little success until the arrival of the arithmometer, a portable and reliable mechanical device that could add, subtract, multiply, and divide numbers.

在17、18和19世纪，开发了很多机械计算器，但在四则计算器到来之前几乎都没有成功，四则计算器是一种便携式且可靠的机械装置，可以对数字进行加、减、乘和除。