There are three bookshelves in Xiao Ming’s house, each with 4 floors, and there are 960 books in total. How many books are placed on each shelf on average?
小明家有三个书架，每个书架有4层，一共放960本书，平均每个书架每层放多少本书？
<gadget id="calculator">960 / 3 / 4</gadget>
<output>80</output>

<result>80</result>