how many times is the chassis brabham bt33?
CREATE TABLE table_name_79 (year VARCHAR, chassis VARCHAR)
SELECT COUNT(year) FROM table_name_79 WHERE chassis = "brabham bt33"
### Context: CREATE TABLE table_name_79 (year VARCHAR, chassis VARCHAR) ### Question: how many times is the chassis brabham bt33? ### Answer: SELECT COUNT(year) FROM table_name_79 WHERE chassis = "brabham bt33"