If a cylinder with a base radius of 4 cm and a height of 9 cm is cut into the largest cone, how many cubic centimeters should be cut off?
把一个底面半径为4厘米，高是9厘米的圆柱，削成一个最大的圆锥，应削去的部分是多少立方厘米？
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

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

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3.14 * 16 * 9 * (2/3)</gadget>
<output>301.44</output>

<result>301.44</result>