A square pool has a perimeter of 240 meters, what is the area in square meters?
一个正方形的水池，周长是240米，它的占地面积是多少平方米？
<gadget id="calculator">240 / 4</gadget>
<output>60</output>

<gadget id="calculator">60 * 60</gadget>
<output>3_600</output>

<result>3_600</result>