There is a rectangular watermelon field with a length of 60 decimeters and a width of 20 decimeters. What is the area in square decimeters?
有一块长方形西瓜地，长60分米，宽20分米，面积是多少平方分米？
<gadget id="calculator">60 * 20</gadget>
<output>1_200</output>

<result>1_200</result>