A 1.6-meter rope is wound around a big red cylinder in an ancient building, and there is an additional 0.03 meters around it twice. What is the radius of this cylinder in meters?
把一根1.6米的绳子，绕在一个古代建筑中的大红圆柱上，绕了两圈还多0.03米，这个圆柱的半径是多少米？
<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>

<result>0.125</result>