CREATE TABLE table_name_83 (grid INT, time_retired VARCHAR, laps VARCHAR)

What is the average Grid that has a Time/Retired of +2 laps, and under 51 laps?
SELECT AVG(grid) FROM table_name_83 WHERE time_retired = "+2 laps" AND laps < 51
SELECT AVG("grid") FROM "table_name_83" WHERE "+2 laps" = "time_retired" AND "laps" < 51