The school has to print 5,600 test papers, and it took half an hour to complete (2/5) of the total. According to this calculation, how long will it take to complete all the printing tasks?
学校要印刷5600张试卷，用了半小时就完成了总数的(2/5)，照这样计算，完成全部印刷任务共要多长时间？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">(2/5) / (1/2)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / (4/5)</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>