Use a batch of paper to bind exercise books. If each book has 40 pages, it can hold 600 books. If each book has 10 more 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．如果每本多10页，可以装订多少本？
<gadget id="calculator">40 * 600</gadget>
<output>24_000</output>

<gadget id="calculator">40 + 10</gadget>
<output>50</output>

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

<result>480</result>