The school art room is 8.4 meters long and 4.5 meters wide. What is its area in square meters?
学校美术室的长是8.4米，宽是4.5米．它的面积是多少平方米？
<gadget id="calculator">8.4 * 4.5</gadget>
<output>37.8</output>

<result>37.8</result>