A conical grain pile has a circumference of 18.84 meters and a height of 2 meters. If each cubic meter of grain weighs 0.7 tons, how much does this pile of grain weigh?
一个圆锥形粮堆，量得它的底面周长是18.84米，高是2米，如果每立方米粮食重0.7吨，这堆粮食有多重？
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

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

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 2 * 0.7</gadget>
<output>13.188</output>

<result>13.188</result>