Fatty reads a book. He originally planned to read 16 pages a day and finish it in 15 days. In fact, it took him 12 days to finish reading. How many pages did he read on average every day?
小胖看一本书，原计划每天看16页，15天看完．实际他用了12天就看完了，实际平均每天看多少页？
<gadget id="calculator">16 / 12</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">15 * (4/3)</gadget>
<output>20</output>

<result>20</result>