2. (8 points) A large cube with an edge length of 5 is cut into 125 smaller cubes with an edge length of 1. The total surface area of these smaller cubes is $\qquad$ times the surface area of the original large cube.
2. (8 points) A large cube with an edge length of 5 is cut into 125 smaller cubes with an edge length of 1. The total surface area of these smaller cubes is $\qquad$ times the surface area of the original large cube.

【Solution】Solution: According to the analysis, the original cube has 6 faces. Each cut adds 2 faces. To cut it into 125 small pieces, it requires $4+4+4=12$ cuts, adding a total of 24 faces. The final surface area is $\frac{6+24}{6}=5$ times the initial area.

Therefore, the answer is: 5.