A conical wheat pile has a measured base circumference of 6.28 meters and a height of 6 meters. Each cubic meter of wheat weighs 750 kilograms. How many tons does this pile of wheat weigh?
一个圆锥形的小麦堆，测得的底面周长是6.28米，高是6米，每立方米小麦重750千克，这堆小麦大约重多少吨？
<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">750 / 1_000</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/3) * 3.14 * 1 * 6 * (3/4)</gadget>
<output>4.71</output>

<result>4.71</result>