CREATE TABLE table_name_39 (episodes VARCHAR, tv_station VARCHAR, average_ratings VARCHAR)

What is the episode on NHK with average ratings of 9.2%?
SELECT COUNT(episodes) FROM table_name_39 WHERE tv_station = "nhk" AND average_ratings = "9.2%"
SELECT COUNT("episodes") FROM "table_name_39" WHERE "9.2%" = "average_ratings" AND "nhk" = "tv_station"