There are 3 identical bookshelves in Maomao's house, with 432 books in total, and each bookshelf has 3 floors. How many books are placed on each shelf on average?
毛毛家有3个同样的书架，共放了432本书，每个书架都是3层．平均每个书架每层放多少本书？
<gadget id="calculator">432 / 3 / 3</gadget>
<output>48</output>

<result>48</result>