Our school has 6 grades, each grade has 5 classes, and each class donates 24 books. How many books can we donate in total?
我们学校有6个年级，每个年级有5个班，每个班捐24本书，一共能捐多少本书？
<gadget id="calculator">24 * 5 * 6</gadget>
<output>720</output>

<result>720</result>