There is a square flower bed with a side length of 20 meters on the east side of People’s Square, and a rectangular grass field with a length of 130 meters and a width of 40 meters on the west side. How many square meters is the area of the lawn larger than the area of the flower bed?
人民广场东面有一个边长是20米的正方形花坛，西面有一块长130米，宽40米的长方形草地，草地的面积比花坛的面积多多少平方米？
<gadget id="calculator">130 * 40</gadget>
<output>5_200</output>

<gadget id="calculator">20 * 20</gadget>
<output>400</output>

<gadget id="calculator">5_200 - 400</gadget>
<output>4_800</output>

<result>4_800</result>