There is a cylindrical steel with a radius of 2 cm and a height of 6 cm. If it is processed into a cone with the same base and height, how many cubic centimeters of steel should be cut off?
有一根半径是2厘米，高是6厘米的圆柱形钢材，加工成与它等底等高的圆锥，要切去多少立方厘米的钢材．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</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">75.36 * (2/3)</gadget>
<output>50.24</output>

<result>50.24</result>