CREATE TABLE table_30021 ("Series #" FLOAT, "Episode #" TEXT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "U.S. viewers  ( millions ) " TEXT)

How many million U.S. viewers wtched episode 69 of the series?
SELECT "U.S. viewers (millions)" FROM table_30021 WHERE "Series #" = '69'
SELECT "U.S. viewers (millions)" FROM "table_30021" WHERE "Series #" = '69'