parallelogram, the base is 5.7 meters, the area is 22.8 square meters, what is the height in meters.
一个平行四边形，底边是5.7米，面积是22.8平方米，高是多少米．
<gadget id="calculator">22.8 / 5.7</gadget>
<output>4</output>

<result>4</result>