A conical grain mound with a bottom circumference of 9.42 meters and a height of 3 meters. If each cubic meter of rice weighs about 600 kilograms, how many tons does this pile of rice weigh?
一个圆锥形谷堆，底面周长9.42米，高3米．如果每立方米稻谷大约重600千克，这堆稻谷约重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">9.42 / 3.14 / 2</gadget>
<output>1.5</output>

<gadget id="calculator">1.5 ** 2</gadget>
<output>2.25</output>

<gadget id="calculator">3 / 1_000</gadget>
<output>3/1_000 = around 0.003</output>

<gadget id="calculator">600 * (1/3) * 3.14 * 2.25 * (3/1_000)</gadget>
<output>4.239</output>

<result>4.239</result>