The school has a total of 3600 books. If there are 6 bookshelves on average, and each shelf has 6 layers, how many books are placed on each layer?
学校共有图书3600本．如果平均放在6个书架上，每个书架有6层，平均每层放多少本书？
<gadget id="calculator">3_600 / 6 / 6</gadget>
<output>100</output>

<result>100</result>