A number is first enlarged by 1000 times, then reduced by 100000 times, and then enlarged by 10000 times. At this time, the number is exactly 1. Find this number.
一个数先扩大1000倍，再缩小100000倍，又扩大10000倍，这时的数正好是1，求这个数．
<gadget id="calculator">1 / 10_000</gadget>
<output>1/10_000 = around 0.0001</output>

<gadget id="calculator">100_000 / 1_000</gadget>
<output>100</output>

<gadget id="calculator">(1/10_000) * 100</gadget>
<output>1/100 = around 0.01</output>

<result>1/100 = around 0.01</result>