A 10-meter-long wire is wound 3 times on a disc, which is 0.58 meters longer. What is the diameter of the disc in meters?
把一根10米长的电线，在一个圆盘上绕了3圈还多0.58米，这个圆盘直径多少米．
<gadget id="calculator">10 - 0.58</gadget>
<output>9.42</output>

<gadget id="calculator">9.42 / 3 / 3.14</gadget>
<output>1</output>

<result>1</result>