Fix Spreadsheet Formula Issues

I need assistance with a spreadsheet where the mathematical operation formulas are not functioning correctly. The main issue is that the formulas are not adding up over the other tabs, and the incorrect results are occurring randomly.

Key Requirements:
- Diagnose and fix the issues with mathematical operation formulas
- Ensure formulas correctly sum data across multiple tabs
- Verify that all formulas are functioning and updating as expected

Ideal Skills and Experience:
- Proficiency in spreadsheet software (e.g., Excel, Google Sheets)
- Strong understanding of mathematical operations and formula troubleshooting
- Experience in resolving multi-tab spreadsheet issues
- Attention to detail and problem-solving skills

If you have the expertise to resolve these issues, I would appreciate your help in getting my spreadsheet back on track.