A rope is wound exactly 25 times around a round rod, the diameter of which is 6 cm. How many meters is half the length of this rope?
一根绳子正好在一根圆棒上绕满25圈，圆棒的直径是6厘米．这根绳子长度的一半是多少米？
<gadget id="calculator">25 / 2 / 100</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">3.14 * 6 * (1/8)</gadget>
<output>2.355</output>

<result>2.355</result>