Master Li completes (2/5) of a job in (1/5) hours. According to this efficiency, how many hours will it take to complete this job.
李师傅在(1/5)小时内做完一项工作的(2/5)，按这样的效率，做完这项工作需要多少小时．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

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

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