A project is completed in 16 days, how many days can complete 25% of the project.
一项工程16天完成，多少天可以完成这项工程的25%．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">(1/4) / (1/16)</gadget>
<output>4</output>

<result>4</result>