A copper wire is 12.56 meters long and is wound 50 times on a circular coil. What is the diameter of the coil in centimeters?
一根铜丝长12.56米，正好在一个圆形线圈上绕满50圈，这个线圈的直径是多少厘米．
<gadget id="calculator">12.56 / 50 / 3.14</gadget>
<output>0.08</output>

<gadget id="calculator">0.08 * 100</gadget>
<output>8</output>

<result>8</result>