A square flower pond has a perimeter of 25 meters, what is its area in square meters?
一个正方形的花池，周长是25米，它的面积是多少平方米．
<gadget id="calculator">25 / 4</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">(25/4) * (25/4)</gadget>
<output>625/16 = around 39.0625</output>

<result>625/16 = around 39.0625</result>