A pile of rice is conical, with a diameter of 4 meters at the bottom and a height of 1.2 meters. If each cubic meter of rice weighs 750 kilograms, how much does the pile of rice weigh in total?
一堆稻谷成圆锥形，底面直径为4米，高为1.2米，如果每立方米的稻谷重750千克，那么这堆稻谷共重多少千克？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

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

<gadget id="calculator">(1/3) * 3.14 * 4 * 1.2 * 750</gadget>
<output>3_768</output>

<result>3_768</result>