A square fish pond has a perimeter of 360 meters, how many square meters does this fish pond occupy?
一个正方形的鱼池，周长是360米，这个鱼池占地多少平方米？
<gadget id="calculator">360 / 4</gadget>
<output>90</output>

<gadget id="calculator">90 * 90</gadget>
<output>8_100</output>

<result>8_100</result>