The school bought 32 packs of exercise books, 20 books in each pack. Each class is divided into 80 books, how many classes can it be divided into?
学校买来32包练习本，每包20本．每班分80本，能够分给几个班？
<gadget id="calculator">32 * 20</gadget>
<output>640</output>

<gadget id="calculator">640 / 80</gadget>
<output>8</output>

<result>8</result>