Wang Yuchen used a 2-meter-long rope to measure the circumference of the trunk of a tree. After the rope went around the trunk for two weeks, it was 0.116 meters longer. What is the diameter of the cross-section of the trunk of this tree in meters?
王雨辰用一根2米的长的绳子去测量一棵树树干的周长，绳子绕树干两周后还多出0.116米．这棵树树干横截面的直径是多少米？
<gadget id="calculator">2 - 0.116</gadget>
<output>1.884</output>

<gadget id="calculator">1.884 / 2 / 3.14</gadget>
<output>0.3</output>

<result>0.3</result>