If the base and height of a parallelogram are both increased by 20%, what is the increase in its area?
平行四边形的底和高都增加20%，则它的面积增加多少
<gadget id="calculator">1.44 - 1</gadget>
<output>0.44</output>

<gadget id="calculator">0.44 / 1</gadget>
<output>0.44</output>

<result>0.44</result>