Create calculation endpoint(s)

[GDamaso]

Describe the task

As a (User Type/Persona) I want (Feature/enhancement) So That (Value, why is this wanted, what is the user trying to accomplish)

Acceptance Criteria

e.g. Given (Context), When (Action carried out), Then, (expected outcomes)

• [ ] First
• [ ] Second
• [ ] Third

Additional context

• Add any other context about the task here.

[GDamaso]

Moved to backlog since we decided to focus on implementing the calculation in the frontend for now.