If the length of the base of a parallelogram is increased by 20%, and the height on the base is reduced by 30%, what percentage of the area of the new parallelogram is the area of the original quadrilateral?
如果一个平行四边形的底边长增加20%，底边上的高缩小30%，那么这个新平行四边形的面积是原来四边形面积的百分之几？
<gadget id="calculator">156 / 100</gadget>
<output>39/25 = around 1.56</output>

<result>39/25 = around 1.56</result>