Comprehensive Excel Data Cleanup

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I need help whipping a large Excel spreadsheet—well over twenty columns—into shape so it’s ready for analysis and reporting. The file is already in .xlsx format; the work is purely about tidying what’s inside it, not migrating it from another source. Here’s exactly what must happen: • Remove duplicates so each record is unique. • Correct obvious data errors—typos, misplaced values, or broken formulas. • Standardize formats for dates, numbers, text casing, and any other inconsistent fields. Once the cleanup is complete, send back: 1. The fully refreshed spreadsheet, ready for immediate use. 2. A brief changelog or summary sheet that notes the main fixes you performed (helpful for audit purposes). If you use Power Query, VBA, or...

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