The base of a parallelogram is 1.6 decimeters, and the base is twice the height. What is its area?
一个平行四边形的底是1.6分米，底是高的2倍，它的面积是多少．
<gadget id="calculator">1.6 / 2</gadget>
<output>0.8</output>

<gadget id="calculator">1.6 * 0.8</gadget>
<output>1.28</output>

<result>1.28</result>