A 1.6-meter-long iron wire is wound around a big red cylinder in an ancient building, and there are 0.03 meters more than 2 turns. What is the radius of this cylinder in centimeters?
把一根1.6米长的铁丝，绕在一个古代建筑中的大红圆柱上，绕2圈还多0.03米，这个圆柱的半径是多少厘米？
<gadget id="calculator">1.6 - 0.03</gadget>
<output>1.57</output>

<gadget id="calculator">1.57 / 2 / 3.14 / 2</gadget>
<output>0.125</output>

<gadget id="calculator">0.125 * 100</gadget>
<output>12.5</output>

<result>12.5</result>