Use two identical trapezoids to form a parallelogram. It is known that the area of the quadrilateral is 15 square meters. What is the area of each trapezoid in square meters?
用两个完全一样的梯形拼成一个平形四边形，已知平形四边形的面积是15平方米，每个梯形的面积是多少平方米．
<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>