CREATE TABLE table_name_70 (assets__billion_ INTEGER, company VARCHAR(255), sales__billion_$_ VARCHAR(255))
What is the average assets in billions of the company Bank of America, which has less than 49.01 billions in sales?
    
SQL: SELECT AVG(assets__billion_) AS $_ FROM table_name_70 WHERE company = "bank of america" AND sales__billion_$_ < 49.01