The circumference of the bottom of a cone is 6.28M and the height is 3M. What is its volume M**3.
一个圆锥的底面周长是6.28M，高3M，它的体积是多少M**3．
<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

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

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

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

<result>3.14</result>