To build a section of road, how many days will it take to repair this section of road every day (1/9).
修一段路，每天修这段路的(1/9)，多少天可以修完．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 / (1/9)</gadget>
<output>9</output>

<result>9</result>