Uncle Li grows vegetables in a parallelogram field. The bottom of the vegetable field is 5.5 meters and the height is 4 meters. What is the area of the field in square meters?
李大爷在一块平行四边形田地里种青菜，菜地的底边是5.5米，高是4米，这块地的面积是多少平方米．
<gadget id="calculator">5.5 * 4</gadget>
<output>22</output>

<result>22</result>