CREATE TABLE table_name_79 (grid NUMBER, time_retired VARCHAR2, laps VARCHAR2)

What is the average grid for competitors who had more than 22 laps and time/retired of +17.276?
SELECT AVG(grid) FROM table_name_79 WHERE time_retired = "+17.276" AND laps > 22
SELECT AVG("grid") FROM "table_name_79" WHERE "+17.276" = "time_retired" AND "laps" > 22