Table schema:
CREATE TABLE table_name_79 (attendance INTEGER, match VARCHAR, opponent VARCHAR, result VARCHAR)

Question: How many Attendance has a Opponent of west bromwich albion, and a Result of 3 – 3, and a Match larger than 20?
SQL: SELECT SUM(attendance) FROM table_name_79 WHERE opponent = "west bromwich albion" AND result = "3 – 3" AND match > 20