The school bought 35 boxes of exercise books, 30 books in each box, and 42 books in each class. How many classes can be divided into?
学校买来35箱练习本，每箱30本，每班分给42本，可以分多少个班？
<gadget id="calculator">35 * 30</gadget>
<output>1_050</output>

<gadget id="calculator">1_050 / 42</gadget>
<output>25</output>

<result>25</result>