How to get my result in decimal precision control with power value?

如何获得我在功率值的小数精度控制的结果吗？

youdao

To create a decimal type, you specify the precision and, optionally, the scale for the data to be stored.

要创建算术类型，应当指定保存的数据的精度，并可选地指定数据的刻度。

youdao

If you've never encountered an exact precision data type, the distinction between a decimal and floating-point type may be confusing.

如果从未遇到过准确精度数据类型，那么对算术类型和浮点类型可能有些迷惑。

youdao

So it turns out there's a solution to this: If you need more precision, more digits after the decimal point than a float allows, what do you go for instead?

所以这里有一个解决方案：,如果你需要比float类型允许的更高精度，小数点后更多位数,那你该用什么取代它？

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