There is a parallelogram lawn, the base is 240 meters, and the base is 3 times the height, what is the area of this parallelogram?
有一块平行四边形的草坪，底是240米，底是高的3倍，这个平行四边形的面积是多少？
<gadget id="calculator">240 / 3</gadget>
<output>80</output>

<gadget id="calculator">240 * 80</gadget>
<output>19_200</output>

<result>19_200</result>