There are 3 bookshelves in Yelaoshi's home, with a total of 360 books. It is known that each bookshelf has 3 layers, how many books are placed on each layer of each bookshelf?
叶老师家有3个书架一共有360本书．已知每个书架都是3层，平均每个书架每层放多少本书？
<gadget id="calculator">360 / 3 / 3</gadget>
<output>40</output>

<result>40</result>