Cut a cube with a side length of 30 cm into the largest cone, find the volume of the cut part.
把一个棱长为30厘米的正方体木块削成一个最大的圆锥体，求削去部分的体积．
<gadget id="calculator">30 * 30 * 30</gadget>
<output>27_000</output>

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

<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">15 ** 2</gadget>
<output>225</output>

<gadget id="calculator">(1/3) * 3.14 * 225 * 30</gadget>
<output>7_065</output>

<gadget id="calculator">27_000 - 7_065</gadget>
<output>19_935</output>

<result>19_935</result>