The school teaching building is 30 meters long, 10 meters wide and 16 meters high. What is the floor area of this teaching building?
学校教学楼长30米，宽10米，高16米．这座教学楼的占地面积是多少？
<gadget id="calculator">30 * 10</gadget>
<output>300</output>

<result>300</result>