The height of a parallelogram is 50 meters and its base is 72 meters less. What is its area in square meters?
一块平行四边形的高是50米，比底少72米，它的面积是多少平方米？
<gadget id="calculator">50 + 72</gadget>
<output>122</output>

<gadget id="calculator">122 * 50</gadget>
<output>6_100</output>

<result>6_100</result>