A conical rice pile has a base radius of 2 meters and a height of 1.5 meters. Each cubic meter of rice weighs about 600 kilograms. How many kilograms of rice are planted in this pile?
一个圆锥稻谷堆，底面半径是2米，高1.5米，每立方米稻谷约重600千克，这堆稻谷种多少千克？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</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>

<gadget id="calculator">600 * 6.28</gadget>
<output>3_768</output>

<result>3_768</result>