The height of the parallelogram is enlarged by 4 times, and the base is reduced to the original (1/2), and the obtained new parallelogram is the area of the original parallelogram.
平行四边形的高扩大4倍，底缩小到原来的(1/2)，得到新平行四边形是原平行四边形的面积的多少．
<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<result>2</result>