The median line of a trapezoid is enlarged to 4 times of the original, and the height is enlarged to 3 times of the original, so how many times is the area of the trapezoid enlarged to the original?
一个梯形的中位线扩大到原来的4倍，高扩大到原来的3倍，那么梯形的面积扩大到原来的多少倍？
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>