Teacher Liu assigned 9 extracurricular questions as homework today. Xiaoling started to do it at 5:25 pm and finished it at 6:10 pm. How long does it take on average to do one question?
刘老师今天布置9道课外题作为家庭作业，小玲从下午5：25开始做，到下午6：10做完，平均做一道题用几分钟？
<gadget id="calculator">45 / 9</gadget>
<output>5</output>

<result>5</result>