The term of borrowing books in the library is 10 days, and the number of days beyond 10 days will be charged as a delayed service fee of 0.5 yuan per book. Xiao Ming borrowed a story book. If he reads 5 pages a day, he can read them all in 16 days. Please do the math for him, how many pages should he read every day to return it on time without paying the late service fee? (Solve using ratio method)
在图书室借阅图书的期限为10天，10天后超过的天数要按每册0.5元收取延时服务费．小明借了一本故事书，如果每天看5页，16天才能全部看完．请你帮他算一算，他应该每天看多少页才能准时归还而不交延时服务费？(用比例的方法解答)
<gadget id="calculator">5 * 16</gadget>
<output>80</output>

<gadget id="calculator">80 / 10</gadget>
<output>8</output>

<result>8</result>