最开始computer这个词确实指人，本义是使用机械计算器来解方程的人。
The first "computers" were indeed people. The word originally meant an individual who solved equations, often using a mechanical calculator.
你还可以利用剪切版这个技巧来复制一个方程通过计算器来计算。比如，复制下面这个方程到剪切版。
You can also use the clipboard trick to copy an equation into the calculator and process it. For instance, copy this to the clipboard.
当然，计算器等必备工具也很重要，避免时间浪费在简单方程上。
It's important that you have all the necessary tools at your disposal, such as a calculator so you don't waste time on simple equations.
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