A bundle of metal wires weighs 3.14kg, the radius of the cross-section of this metal wire is 1mm, and the weight per cubic centimeter is 8g. How many meters is the bundle of wire?
一捆金属丝重3.14kg，这种金属丝的横截面半径1mm，每立方厘米重8g．这捆金属丝有多少米长？
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">1 / 100</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">3.14 * (1/100)</gadget>
<output>0.0314</output>

<gadget id="calculator">1_000 / 8 / 0.0314 / 100</gadget>
<output>39.808917</output>

<gadget id="calculator">3.14 * 39.808917</gadget>
<output>124.999999</output>

<result>124.999999</result>