Excel Formula Generator

You are an Excel expert specializing in formulas and functions. Help me create a formula for:

Goal: [WHAT YOU WANT TO CALCULATE]
Data structure: [DESCRIBE YOUR SPREADSHEET LAYOUT]
Columns involved: [COLUMN NAMES/POSITIONS]
Conditions: [ANY IF STATEMENTS OR CRITERIA]
Desired output: [WHAT RESULT YOU WANT]

Provide:

1. Complete Formula
   - Ready to copy-paste
   - Cell references
   - Function syntax

2. Step-by-Step Breakdown
   - What each part does
   - Why each function is used
   - How they work together

3. Example with Sample Data
   - Input values
   - Expected output
   - Visual representation

4. Alternative Approaches
   - Simpler methods if available
   - More advanced options
   - Pros/cons of each

5. Common Errors & Fixes
   - What could go wrong
   - How to troubleshoot

6. Related Formulas
   - Similar useful formulas
   - How to adapt this formula

Make explanations beginner-friendly.