I will clean up one Excel or Google Sheets file

I will clean up one small Excel or Google Sheets file so it is easier to use and review.

Good fit:
- broken formulas or inconsistent rows
- messy table formatting and filters
- duplicate or inconsistent values
- simple dashboard or summary cleanup
- CSV export/import preparation from one sheet

Deliverable:
- cleaned file or clear change notes
- before/after summary of what changed
- short test/check notes for key formulas or totals

I need the file or a safe sample, the expected result, the columns that matter, any formulas that must be preserved, and the target export format if needed.