Feature/calculator

[jim2107054]

Description of Change

References

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

• Added description of change
• Relevant documentation/comments is changed or added
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I have performed a self-review of my own code by running the project in local
• I acknowledge that all my contributions will be made under the project's license.

Notes: