Xiao Ming reads a science and technology book, if he reads 8 pages a day, he can finish it in 25 days. If it takes 20 days to finish reading, how many pages do you read on average per day? (Solve with ratio)
小明看一本科技书，如果每天看8页，25天可以看完．如果要20天看完，平均每天看多少页？(用比例解)
<gadget id="calculator">25 * 8</gadget>
<output>200</output>

<gadget id="calculator">200 / 20</gadget>
<output>10</output>

<result>10</result>