A pile of coal is conical with a height of 2 meters and a circumference of 18.84 meters at the bottom. It is known that coal weighs 1.5 tons per cubic meter. How much does this pile of coal weigh?
一堆煤成圆锥形，高2米，底面周长为18.84米．已知每立方米煤重1.5吨．这堆煤重多吨？
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">18.84 / 6.28</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 * 1.5</gadget>
<output>28.26</output>

<result>28.26</result>