A parallelogram has a base of 1.2 decimeters and twice its height, what is the area in square decimeters?
一个平行四边形，底是1.2分米，是高的2倍，面积是多少平方分米．
<gadget id="calculator">1.2 / 2</gadget>
<output>0.6</output>

<gadget id="calculator">1.2 * 0.6</gadget>
<output>0.72</output>

<result>0.72</result>