A rope is 18.84 meters long and wraps exactly 30 times around the trunk. What is the radius of the trunk's cross section in centimeters?
一根绳长18.84米，正好绕树干30圈，树干横截面的半径是多少厘米？
<gadget id="calculator">1_884 / 30</gadget>
<output>314/5 = around 62.8</output>

<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">(314/5) / 6.28</gadget>
<output>10</output>

<result>10</result>