Cut a square paper with a circumference of 32 decimeters into the largest circle. What is the area of each circle?
把一张周长32分米的正方形纸剪成一个最大的圆．圆的面积各是多少？
<gadget id="calculator">32 / 4</gadget>
<output>8</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<result>50.24</result>