Hi everyone,I got this puzzle and but I cannot solve it,can anyone please help me?

For a cube, it requires6 cutsto cut it into 27 cubes.

Can the number of cuts be reduced if the cubecan be piled togetherafter each cut?

If it can be done, then find the solution for a cube and then give the general formula for a cube.

Please help me,I found it is really not easy to visualising the situation.