Lili cut a cylinder of cement with a base diameter of 8 cm and a height of 12 cm into the largest cone. How many cubic centimeters has the volume been reduced after cutting?
丽丽把一个底面直径8厘米，高12厘米的圆柱胶泥切削成一个最大的圆锥体，切削后的体积比原来减少了多少立方厘米？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3.14 * 16 * 12 * (2/3)</gadget>
<output>401.92</output>

<result>401.92</result>