The school bought a new batch of books. If each class is divided into 24 books, then it can be distributed to 25 classes. If there are 30 classes, how many books are assigned to each class on average?
学校新买来一批图书，如果每班分24本，那么正好能分给25个班．如果要分给30个班，那么平均每班分多少本？
<gadget id="calculator">25 / 30</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">24 * (5/6)</gadget>
<output>20</output>

<result>20</result>