Xiao Ming did 40% of the homework in (1/5) hours. According to this calculation, how many hours will it take to complete this homework.
小明用(1/5)小时做了作业的40%，照这样计算，完成这项作业共要多少小时．
<gadget id="calculator">40 / 100</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>