You don't need to know VLOOKUP. You just need to know how to ask.
Messy data. Duplicates. Wrong formats.
Usually, you spend hours fixing this manually.
Upload the CSV to Gemini and say:
"I am uploading a sales report.
1. Clean it: Remove duplicates and fix date formats.
2. Analyze: Which product category has the highest growth month-over-month?
3. Visualize: Create a bar chart showing sales by region."