An approximately conical wheat pile has a base diameter of 4 meters and a height of 1.5 meters. How many cubic meters does this pile of wheat have?
一个近似圆锥形的小麦堆，量得底面直径4米，高1.5米，这堆小麦大约有多少立方米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 1.5</gadget>
<output>6.28</output>

<result>6.28</result>