A pile of coal is in the shape of a cone with a base radius of 15 meters and a height of 0.9 meters. Each cubic meter of coal weighs 1.4 tons. How many tons does this pile of coal weigh? (Retain integers)
一堆煤成圆锥形，底面半径是15米，高是0.9米．每立方米煤重1.4吨，这堆煤重多少吨？(得数保留整数)
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15 ** 2</gadget>
<output>225</output>

<gadget id="calculator">(1/3) * 3.14 * 225 * 0.9</gadget>
<output>211.95</output>

<gadget id="calculator">211.95 * 1.4</gadget>
<output>296.73</output>

<result>296.73</result>