A bookshelf has 5 floors, and each floor holds 24 books. May I ask how many books can be placed in 5 bookshelves?
一个书架共5层，每层放书24本，请问5个书架，一共能放多少本书？
<gadget id="calculator">24 * 5 * 4</gadget>
<output>480</output>

<result>480</result>