Multi-turn user requests:
user: Could you populate 'annual_report.txt' with data on quarterly revenue? It's somewhere inside the file system.
user: The specific data to include is 'Q1: $5000, Q2: $7000, Q3: $6000, Q4: $8000'.
user: What's the mean of the quarterly revenue?
user: Can you write the answer into a new file named 'MeanRevenue.txt'? Just the number and nothing

Tools involved: GorillaFileSystem
MathAPI
Expected function-call sequence: GorillaFileSystem.touch
GorillaFileSystem.echo
GorillaFileSystem.grep
GorillaFileSystem.sort
GorillaFileSystem.wc
MathAPI.mean