Use a 6m long rope to wrap 3 times around a cylindrical stone pillar, and there is 0.348m left. Find the circumference of the cross section of the stone pillar.
用6m长的绳子在一根圆柱形石柱上绕3周，还余下0.348m，求石柱横截面的周长．
<gadget id="calculator">6 - 0.348</gadget>
<output>5.652</output>

<gadget id="calculator">5.652 / 3</gadget>
<output>1.884</output>

<result>1.884</result>