conical grain pile with a base diameter of 10 meters and a height of 1.5 meters. Each cubic meter of grain weighs 0.7 tons. How many tons does this pile of grain have?
圆锥形谷堆，底面直径是10米、高1.5米．每立方米谷重0.7吨，这堆谷有多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

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

<gadget id="calculator">(1/3) * 3.14 * 25 * 1.5</gadget>
<output>39.25</output>

<gadget id="calculator">39.25 * 0.7</gadget>
<output>27.475</output>

<result>27.475</result>