The side length of a square woodland is 3000 meters, what is the area of the woodland in square kilometers
一个正方形林地的边长是3000米，这个林地的面积是多少平方千米
<gadget id="calculator">3_000 / 1_000_000</gadget>
<output>3/1_000 = around 0.003</output>

<gadget id="calculator">3_000 * (3/1_000)</gadget>
<output>9</output>

<result>9</result>