CREATE TABLE table_name_89 (one_way VARCHAR2, miles_ NUMBER, fans_took VARCHAR2)

What shows for miles [One Way] when the fans took 340?
SELECT AVG(miles_) AS "one_way" FROM table_name_89 WHERE fans_took = "340"
SELECT AVG("miles_") AS "one_way" FROM "table_name_89" WHERE "340" = "fans_took"