It takes two days to complete a project (1/5), how many days will it take to complete all the projects in this way.
两天完成一项工程的(1/5)，照这样计算完成全部的工程要多少天．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / 2</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / (1/10)</gadget>
<output>10</output>

<result>10</result>