Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the average sales in billions of the company headquartered in France with more than 2,539.1 billion in assets?

### Inputs:
table_name: table, columns: ['Rank', 'Company', 'Headquarters', 'Industry', 'Sales (billion $)', 'Profits (billion $)', 'Assets (billion $)', 'Market Value (billion $)']

### Response:
SELECT AVG Sales (billion $) FROM table WHERE Headquarters = france AND Assets (billion $) > 2,539.1