square wooden block with a side length of 10 cm. For the first time, a small cube hole with a side length of 1 cm is dug out on it; for the second time, a square hole with a side length of 0.5 cm is dug in the center of the bottom of the first small hole. Cube small hole; for the third time, dig a small cube hole with a side length of 0.2 cm at the bottom center of the second small hole. What is the volume of the resulting remaining geometry?
一个正方体木块，棱长10厘米，第一次在上面挖去一个棱长为1厘米的正方体小洞；第二次再在第一个小洞的底部中心挖去一个棱长为0.5厘米的正方体小洞；第三次再在第二个小洞的底部中心挖去一个棱长为0.2厘米的正方体小洞．所得剩余几何体的体积是多少？
<gadget id="calculator">10 ** 3</gadget>
<output>1_000</output>

<gadget id="calculator">1 ** 3</gadget>
<output>1</output>

<gadget id="calculator">0.5 ** 3</gadget>
<output>0.125</output>

<gadget id="calculator">0.2 ** 3</gadget>
<output>0.008</output>

<gadget id="calculator">1 + 0.125 + 0.008</gadget>
<output>1.133</output>

<gadget id="calculator">1_000 - 1.133</gadget>
<output>998.867</output>

<result>998.867</result>