A parallelogram vegetable field has a base of 6.5 meters and a height of 8 meters. If it is divided into two identical trapezoids, what is the area of the trapezoids?
一块平行四边形菜地的底是6.5米，高是8米，把它分割成两个完全一样的梯形，则梯形的面积应该是多少．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">6.5 * 4</gadget>
<output>26</output>

<result>26</result>