cube with a side length of 5 cm, cut out a cuboid whose cross section is a square with a side length of 2 cm (cross-section) at the center of each face, and calculate the volume of the remaining part.
一个棱长为5厘米的正方体，分别在它每个面的中心位置挖去一个横截面是边长为2厘米的正方形的长方体(对穿)，求剩下部分的体积．
<result>69</result>