Teacher Wang corrects homework, if he corrects 8 books per hour, it takes 5 hours to complete the correction, and if he corrects 2 more books per hour, how many hours does it take to complete the correction?
王老师批改作业，如果每小时批改8本，需要5小时批改完，如果每小时多批改2本，需要几小时批改完？
<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8 * (1/2)</gadget>
<output>4</output>

<result>4</result>