The circumference of the base of a conical pile of wheat is 6.28 meters and the height is 1.5 meters. What is the volume of the pile of wheat in cubic meters?
一个圆锥形小麦堆的底面周长是6.28米，高1.5米，这堆小麦的体积是多少立方米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">(1/3) * 3.14 * 1 * 1.5</gadget>
<output>1.57</output>

<result>1.57</result>