The school library bought 6 bookshelves, each with 5 layers, and each layer can hold 70 books. How many books can these bookshelves hold in total?
学校图书室买来6个书架，每个书架有5层，每层可以放70本书．这些书架一共可以放多少本图书？
<gadget id="calculator">5 * 70 * 6</gadget>
<output>2_100</output>

<result>2_100</result>