Write a 3D Disclosure Program

Good day. You need a three-dimensional (3D) expansion program.
The firm cuts large metal blocks into small, different sizes.
The shape of the blocks (both source and final product) - Rectangular parallelepiped
As the initial data, the operator will enter the size of the initial block and the size and number of final blocks.
The program should calculate the optimal cutting scheme and it is desirable to give a 3D drawing (drawing)
Optimality criteria: minimum waste (drops, scraps)

If anyone can do that, please give me an estimate of the cost of the job.