A conical sand pile has a base circumference of 3.14 meters and a height of 1.5 meters. What is the volume of this sand pile?
一个圆锥形沙堆，底面周长是3.14米，高是1.5米，这个沙堆的体积是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 / 3.14 / 2</gadget>
<output>0.5</output>

<gadget id="calculator">0.5 ** 2</gadget>
<output>0.25</output>

<gadget id="calculator">(1/3) * 3.14 * 0.25 * 1.5</gadget>
<output>0.3925</output>

<result>0.3925</result>