A trapezoid with an upper base of 4 cm and a triangle with a base of 3 cm and an area of 6 square centimeters can be put together to form a parallelogram. What is the area of the original trapezoid in square centimeters?
一个上底是4厘米的梯形和一个底是3厘米，面积是6平方厘米的三角形拼在一起，就可以拼成一个平行四边形，原梯形的面积是多少平方厘米．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6 * (2/3)</gadget>
<output>4</output>

<gadget id="calculator">4 + 4 + 3</gadget>
<output>11</output>

<gadget id="calculator">2 / 3 / 2</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">11 * 6 * (1/3)</gadget>
<output>22</output>

<result>22</result>