For a parallelogram, the base is enlarged by 12 times and the height is reduced by 4 times, then how many times the area of the parallelogram is enlarged
一个平行四边形，底扩大12倍，高缩小4倍，那么这个平行四边形的面积扩大多少倍
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>3</result>