conical pile of wheat is 3 meters high and has a base radius of 5 meters. If each cubic meter of wheat weighs 0.8 tons, how many tons does this pile of wheat weigh?
一个圆锥形小麦堆，高3米，底面半径5米，如果每立方米小麦重0.8吨，这堆小麦大约有多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) * 3.14 * 25 * 3</gadget>
<output>78.5</output>

<gadget id="calculator">78.5 * 0.8</gadget>
<output>62.8</output>

<result>62.8</result>