CREATE TABLE table_name_57 (average VARCHAR(255), matches VARCHAR(255), best_bowling VARCHAR(255), team VARCHAR(255), wickets VARCHAR(255))
What is the total average for the England team when the wickets are less than 18, the best bowling is 4/138, and there are less than 3 matches?
    
SQL: SELECT COUNT(average) FROM table_name_57 WHERE team = "england" AND wickets < 18 AND best_bowling = "4/138" AND matches < 3