Fengli Primary School built a new 3-story teaching building. There are 10 classrooms on each floor, and 1200 desks are bought and placed in these classrooms. How many desks are placed in each classroom on average?
丰利小学新建了一幢3层教学楼．每层10个教室，买来1200张课桌放在这些教室里，平均每个教室放多少张？
<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<gadget id="calculator">1_200 / 30</gadget>
<output>40</output>

<result>40</result>