Find the area of a parallelogram: the base is 8.5 meters, and the height is 1.5 meters longer than the base.
求平行四边形的面积：底是8.5米，高比底长1.5米．
<gadget id="calculator">1.5 + 8.5</gadget>
<output>10</output>

<gadget id="calculator">8.5 * 10</gadget>
<output>85</output>

<result>85</result>