A conical pile of yellow sand has a bottom circumference of 25.12 meters and a height of 3 meters. Each cubic meter of yellow sand weighs 2 tons. How many tons does this pile of sand weigh?
一堆圆锥形黄沙，底面周长是25.12米，高3米，每立方米的黄沙重2吨，这堆沙重多少吨？
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">50.24 * 3 * (1/3) * 2</gadget>
<output>100.48</output>

<result>100.48</result>