There is a square flower pond in the garden. Its circumference is 68 meters, what is its area in square meters?
花园里有一个正方形的花池．它的周长是68米，面积是多少平方米？
<gadget id="calculator">68 / 4</gadget>
<output>17</output>

<gadget id="calculator">17 * 17</gadget>
<output>289</output>

<result>289</result>