There is a right-angled trapezoid, the upper base is 3/5 of the lower base. If the lower base is reduced by 8 cm, it becomes a square. What is the original area of the trapezoid?
有一个直角梯形，上底是下底的(3/5)，如果下底减少8厘米，正好变成一个正方形，原来这个梯形的面积是多少？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">12 + 20</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>