Excel Database Consolidation

I need help combining and cleaning several existing Excel databases into a single comprehensive database. This database should summarize overall annual business revenue and expenses.

Requirements:
- Combine multiple Excel databases into one
- Clean existing data, beyond minor corrections
- Reflect a summary of:
- Sales
- Cost of goods sold
- Taxes
- Revenue streams
- Operational costs
- Salaries
- Invoices
- Bills
- Miscellaneous expenses
- Generate summary reports monthly

Ideal Skills and Experience:
- Proficiency in Excel
- Experience with data cleaning and database management
- Strong attention to detail
- Ability to create comprehensive summary reports

Please provide samples of previous work.