Class 51 students used weekends to help the school library sort out books. The original plan was to sort out 500 volumes per hour, which can be finished in 7 hours. The actual number of volumes sorted per hour is 1.4 times the original plan, how many hours are actually sorted?
五1班同学利用周末帮助学校图书馆整理图书，原计划每小时整理500册，7小时可以整理完．实际每小时整理的册数是原计划的1.4倍，实际几小时整理完？
<gadget id="calculator">500 * 1.4</gadget>
<output>700</output>

<gadget id="calculator">7 / 700</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">500 * (1/100)</gadget>
<output>5</output>

<result>5</result>