A rectangular flower bed is 2 meters long and 10 decimeters wide, what is the area of the flower bed?
一个长方形花坛长2米，宽10分米，这个花坛的面积是多少？
<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<result>200</result>