Cut a cube block with an edge length of 3 decimeters into the largest cylinder, and how much of the cut part occupies the cube block.
把棱长3分米的正方体木块，削成一个最大的圆柱，削去部分占这个正方体木块的多少．
<gadget id="calculator">3 * 3 * 3</gadget>
<output>27</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) ** 2</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3.14 * (9/4) * 3</gadget>
<output>21.195</output>

<gadget id="calculator">27 - 21.195</gadget>
<output>5.805</output>

<gadget id="calculator">5.805 / 27</gadget>
<output>0.215</output>

<result>0.215</result>