Xiao Ming borrowed the book "Mystery of Scientific Exploration". If he reads 60 pages a day, he can finish it in 12 days. In order to return it on time, you must read it 3 days in advance. How many pages should you read on average per day?
小明借阅《科学探索之谜》一书，如果每天看60页，12天才能看完．为了按时归还，必须提前3天看完，平均每天应看多少页？
<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<gadget id="calculator">12 / 9</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">60 * (4/3)</gadget>
<output>80</output>

<result>80</result>