Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_65 ( sales__billion_ INTEGER, headquarters VARCHAR, assets__billion_$_ VARCHAR )

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

### Accurate SQL ###

SELECT AVG(sales__billion_) AS $_ FROM table_name_65 WHERE headquarters = "france" AND assets__billion_$_ > 2 OFFSET 539.1