Teacher Li has 49 essays to correct, and has already corrected 14. If 7 essays are corrected every hour, how many hours will it take to complete the correction?
李老师要批改49篇作文，已经批改了14篇，如果每小时批改7篇，还需几小时能批改完？
<gadget id="calculator">49 - 14</gadget>
<output>35</output>

<gadget id="calculator">35 / 7</gadget>
<output>5</output>

<result>5</result>