How many cubic decimeters of wood need to be cut from a square block with an edge length of 10 decimeters to form the largest cylinder?
把一个棱长是10分米的正方形木块，削成一个最大的圆柱，需要削去多少立方分米的木块．
<gadget id="calculator">10 * 10 * 10</gadget>
<output>1_000</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 10</gadget>
<output>785</output>

<gadget id="calculator">1_000 - 785</gadget>
<output>215</output>

<result>215</result>