There is a square vegetable field with a side length of 200 meters, what is the area of the vegetable field in square meters?
有一块正方形菜地的边长是200米，这块菜地的面积是多少平方米？
<gadget id="calculator">200 * 200</gadget>
<output>40_000</output>

<result>40_000</result>