If a cube with an edge length of 2 decimeters is cut into the largest cylinder, how many cubic decimeters will the volume be reduced?
一个棱长为2分米的立方体，削成一个最大的圆柱体，体积减少多少立方分米．
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

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

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

<gadget id="calculator">3.14 * 1 * 2</gadget>
<output>6.28</output>

<gadget id="calculator">8 - 6.28</gadget>
<output>1.72</output>

<result>1.72</result>