A conical grain mound is 25.12 meters around the periphery of the grain mound, 3 meters high, and the weight of each cubic meter of grain is 1.5 tons. How many tons does this heap of grain weigh in total?
一个圆锥形谷堆，绕着谷堆的外围走一圈是25.12米，高3米，每立方米谷重1.5吨，这堆谷共重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

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

<gadget id="calculator">(1/3) * 3.14 * 16 * 3 * 1.5</gadget>
<output>75.36</output>

<result>75.36</result>