Rectangle packing function: Fit small rectangles in one big rectangle

I am looking for a function/script to estimate the maximum number of smaller rectangles - or squares - that may fit into a larger rectangle or square.

The link below is an onlin algoritme that can doe it, as an expample:

https://www.engineeringtoolbox.com/smaller-rectangles-within-larger-rectangle-d_2111.html

[Matt J]

Subject to what constraints?

[Dora de Jong]

@Matt J

Thank you for the response. The Length and Width of the reactangle als input variables.

Larger rectangel A:

A_Width

A_Length

Small rectangels B (to fit in A): The size of the small reactangles are all the same.

B_Width

B_Length