Use a batch of paper to bind exercise books. If each book has 40 pages, it can hold 600 books. If each book has 50 pages, how many books can be bound?
用一批纸装订练习本，如果每本40页，可以装600本．如果每本50页，可以装订多少本？
<gadget id="calculator">40 * 600</gadget>
<output>24_000</output>

<gadget id="calculator">24_000 / 50</gadget>
<output>480</output>

<result>480</result>