A 3.2-meter-long iron wire is wound around a circular pillar, and there is 0.06 meters remaining after two turns. What is the radius of this circular pillar?
把一根长3.2米的铁丝，绕在一根圆形柱子上，绕两圈还余0.06米，这根圆形柱子的半径是多少？
<gadget id="calculator">3.2 - 0.06</gadget>
<output>3.14</output>

<gadget id="calculator">3.14 / 2 / 3.14 / 2</gadget>
<output>0.25</output>

<result>0.25</result>