CREATE TABLE table_name_15 (laps INTEGER, grid VARCHAR, driver VARCHAR)
SELECT SUM(laps) FROM table_name_15 WHERE grid < 14 AND driver = "ricardo zonta"
Ricardo Zonta ขับไปกี่รอบโดยมีกริดน้อยกว่า 14
How many laps did Ricardo Zonta drive with a grid less than 14?