The playground of Guangming Primary School has a 9-meter-wide rectangular lawn that needs to be expanded. The original area was 540 square meters, but now the width has to be increased to 27 meters, and the length remains the same. What is the area of the expanded green space?
光明小学操场有一个宽9米的长方形草坪要扩大面积，原来的面积为540平方米，现在宽要增加到27米，长不变，扩大后的绿地面积是多少？
<gadget id="calculator">27 / 9</gadget>
<output>3</output>

<gadget id="calculator">3 * 540</gadget>
<output>1_620</output>

<result>1_620</result>