What is the average number of laps when Gerhard Berger is the driver?
CREATE TABLE table_name_23 (laps INTEGER, driver VARCHAR)
SELECT AVG(laps) FROM table_name_23 WHERE driver = "gerhard berger"
### Context: CREATE TABLE table_name_23 (laps INTEGER, driver VARCHAR) ### Question: What is the average number of laps when Gerhard Berger is the driver? ### Answer: SELECT AVG(laps) FROM table_name_23 WHERE driver = "gerhard berger"