A grain pile that is similar to a cone has a bottom circumference of 6.28 meters and a height of 1.5 meters. If each cubic meter weighs 750 kilograms, how many kilograms does this pile of grain weigh?
一个近似圆锥的粮堆，底面周长6.28米，高1.5米，如果每立方米重750千克，这堆粮共重多少千克？
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

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

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) * 3.14 * 1 * 1.5 * 750</gadget>
<output>1_177.5</output>

<result>1_177.5</result>