Xiaohong insists on exercising every day. She runs around the square lotus pond in the community. Two laps are exactly 240 meters. What is the area of this square lotus pond?
小红每天坚持锻炼身体，她绕着小区里的正方形荷花池跑步，跑2圈正好是240米，这个正方形荷花池的面积是多少？
<gadget id="calculator">240 / 2 / 4</gadget>
<output>30</output>

<gadget id="calculator">30 * 30</gadget>
<output>900</output>

<result>900</result>