blackboard is 1.2 meters wide and 3.5 times as long as it is wide. What is the area of the blackboard in square meters?
一块黑板的宽是1.2米，长是宽的3.5倍，这块黑板的面积是多少平方米？
<gadget id="calculator">1.2 * 3.5 * 1.2</gadget>
<output>5.04</output>

<result>5.04</result>