CREATE TABLE table_name_38 (extras INT, name VARCHAR, runs_conceded VARCHAR)

What is the average Extras for Muttiah Muralitharan, with less than 353 Runs Conceded?
SELECT AVG(extras) FROM table_name_38 WHERE name = "muttiah muralitharan" AND runs_conceded < 353
SELECT AVG("extras") FROM "table_name_38" WHERE "muttiah muralitharan" = "name" AND "runs_conceded" < 353