Excel Cleanup & Formula Setup

I have an existing Excel workbook that needs a thorough clean-up and a touch of professional polish. Your job is to:

• remove any stray characters or spacing issues,
• apply a single, consistent font style across every sheet,
• set up the formulas and functions that will automate all current manual calculations (SUM, VLOOKUP/XLOOKUP, IF statements, or whatever is most efficient for the data on hand).

When you return the file, every cell should calculate correctly without error messages, and the entire workbook should look cohesive at a glance.

Please tell me about projects where you have performed similar Excel data cleaning or formula-building work. A quick note on the challenges you solved and the tools or functions you relied on will help me pick the right fit.