The school bought 5 bookshelves, each with 4 layers, and each layer can hold 35 books. How many books can these bookshelves hold in total?
学校买来5个书架，每个书架有4层，每层可以放35本书，这些书架一共可以放多少本书？
<gadget id="calculator">35 * 5 * 4</gadget>
<output>700</output>

<result>700</result>