CREATE TABLE table_name_6 (laps INT, grid VARCHAR, driver VARCHAR)

What is the average laps for the grid smaller than 21 for Renzo Zorzi?
SELECT AVG(laps) FROM table_name_6 WHERE grid < 21 AND driver = "renzo zorzi"
SELECT AVG("laps") FROM "table_name_6" WHERE "driver" = "renzo zorzi" AND "grid" < 21