Divide a 25.12m long iron wire into 2 sections of equal length, one to form a square and the other to form a circle. What percentage is the area of the enclosed square compared to the area of the circle?
把一根长25.12m的铁丝分成长度相等的2段，一根围成正方形，一根围成圆．围成的正方形的面积是圆面积的百分之几？
<gadget id="calculator">25.12 / 2</gadget>
<output>12.56</output>

<gadget id="calculator">12.56 / 4</gadget>
<output>3.14</output>

<gadget id="calculator">3.14 ** 2</gadget>
<output>9.8596</output>

<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">9.8596 / 12.56</gadget>
<output>0.785</output>

<result>0.785</result>