A conical wheat pile has a base circumference of 12.56 meters and a height of 1.5 meters. Each cubic meter of wheat weighs 720 kilograms. How many tons does this pile of wheat weigh?
一个圆锥形麦堆，底面周长为12.56米，高1.5米，每立方米麦子重720千克，那么这堆麦子重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">12.56 / 6.28</gadget>
<output>2</output>

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

<gadget id="calculator">720 / 1_000</gadget>
<output>18/25 = around 0.72</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 1.5 * (18/25)</gadget>
<output>4.5216</output>

<result>4.5216</result>