A conical pile of soybeans has a base circumference of 3.14 meters and a height of 2.1 meters. If soybeans weigh 500 kilograms per cubic meter, how many kilograms does this pile of soybeans weigh?
一堆圆锥形的大豆堆，它的底面周长是3.14米，高2.1米，如果每立方米大豆重500千克，那么这堆大豆有多少千克？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 / 3.14 / 2</gadget>
<output>0.5</output>

<gadget id="calculator">0.5 ** 2</gadget>
<output>0.25</output>

<gadget id="calculator">(1/3) * 3.14 * 0.25 * 2.1 * 500</gadget>
<output>274.75</output>

<result>274.75</result>