A cone of sand is 7.2 meters high and 31.4 meters in circumference. Each cubic meter of sand weighs 1.5 tons. How many tons is this pile of sand?
一个圆锥的沙堆，高为7.2米，底面周长为31.4米，每立方米沙重1.5吨，这堆沙有多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">(1/3) * 3.14 * 25 * 7.2</gadget>
<output>188.4</output>

<gadget id="calculator">188.4 * 1.5</gadget>
<output>282.6</output>

<result>282.6</result>