The school bought 8 new bookshelves, each with 4 layers, and each layer can hold 125 books. How many books can these bookshelves hold?
学校新买来8个书架，每个书架有4层，每层可以放125本书．这些书架一个共可以放几本书？
<gadget id="calculator">125 * 4 * 8</gadget>
<output>4_000</output>

<result>4_000</result>