conical sandy beach measures 12.56 meters in circumference and 1.5 meters in height. If 1 cubic meter of sand weighs 1.6 tons. How many tons does this pile of sand weigh?
一圆锥形沙滩，量得底面周长12.56米，高1.5米．如果1立方米沙重1.6吨．这堆沙重多少吨？
<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">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 * 4 * 1.5 * (1/3)</gadget>
<output>6.28</output>

<gadget id="calculator">1.6 * 6.28</gadget>
<output>10.048</output>

<result>10.048</result>