To build a section of road, how many days will it take to repair this section of road every day (1/12).
修一段路，每天修这段路的(1/12)，多少天可以修完．
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / (1/12)</gadget>
<output>12</output>

<result>12</result>