conical pile of sand has a base radius of 3 meters and a height of 2 meters. Use this pile of sand to pave a 6-meter-wide road with a thickness of 0.02 meters. How long can it be paved?
一个圆锥形沙堆，底面半径3米，高2米，用这堆沙子在6米宽的路面上铺0.02米厚，能铺多长？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 2</gadget>
<output>18.84</output>

<gadget id="calculator">6 * 0.02</gadget>
<output>0.12</output>

<gadget id="calculator">18.84 / 0.12</gadget>
<output>157</output>

<result>157</result>