A cone-shaped sand pile has a circumference of 37.68 meters and a height of 1.5 meters. Each cubic meter of sand weighs 1.4 tons. How many tons does this pile of sand weigh?
一个圆锥形沙堆，量得底面周长是37.68米，高是1.5米，每立方米沙重1.4吨，这堆沙约重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">37.68 / 3.14 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">(1/3) * 3.14 * 36 * 1.5</gadget>
<output>56.52</output>

<gadget id="calculator">56.52 * 1.4</gadget>
<output>79.128</output>

<result>79.128</result>