A piece of right-angled trapezoidal land has an upper base of 12 meters. If the lower base is reduced by 8 meters, the land becomes a square. What is the area of the original trapezoid in square meters?
一块直角梯形的地，它的上底是12米，如果下底减少8米，这块地就变成了正方形，原来梯形的面积是多少平方米．
<gadget id="calculator">12 + 8 + 12</gadget>
<output>32</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">32 * 6</gadget>
<output>192</output>

<result>192</result>