Add a 0 at the end of 9.9, and the counting unit of the original number will be reduced to the original number
在9.9的末尾添上一个0，原数的计数单位就缩小到原来的多少
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>