First expand a decimal number by 1000 times, and then reduce it to the original (1/10) and it is 24.9. What is the original number?
把一个小数先扩大1000倍，再缩小到原来的(1/10)后是24.9，这个数原来是多少．
<gadget id="calculator">10 / 1_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">24.9 * (1/100)</gadget>
<output>0.249</output>

<result>0.249</result>