Master Zhang completed the task in 5 days (1/3), how much does he need to complete the task.
张师傅5天完成任务的(1/3)，完成任务他需要多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / (1/3)</gadget>
<output>3</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<result>15</result>