A conical wheat pile has a base diameter of 8 meters and a height of 1.5 meters. If each cubic meter of wheat weighs about 750 kilograms, how many tons does this pile of wheat weigh?
一个圆锥形小麦堆，底面直径是8米，高1.5米．如果每立方米小麦约重750千克，这堆小麦大约有多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">750 / 1_000</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/3) * 3.14 * 16 * 1.5 * (3/4)</gadget>
<output>18.84</output>

<result>18.84</result>