CREATE TABLE table_name_69 (rating NUMBER, viewers__m_ VARCHAR2, overall_rank VARCHAR2)

What is the rating of the episode with 13.47 million viewers and overall rank larger than 6?
SELECT SUM(rating) FROM table_name_69 WHERE viewers__m_ = 13.47 AND overall_rank > 6
SELECT SUM("rating") FROM "table_name_69" WHERE "overall_rank" > 6 AND "viewers__m_" = 13.47