Master Li completed (2/5) of a job in (1/5) hours, so how many hours will it take to complete this job?
李师傅在(1/5)小时内完成了一项工作的(2/5)，这样计算，完成这项工作一共要多少小时．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/5) / (2/5)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>