Fillable PDF Form with Calculations

I need a fillable PDF form that performs basic arithmetic calculations (addition, subtraction) based on input data. The form will have more than 10 input fields and is primarily used for scoring the input data.

Requirements:
- Ability to create a fillable PDF
- Implement basic arithmetic calculations
- User-friendly layout for scoring input data

Ideal Skills and Experience:
- Proficiency in PDF form creation tools (e.g., Adobe Acrobat)
- Experience with form logic and calculations
- Attention to detail and design for usability