CREATE TABLE table_2411 ("Episode" TEXT, "Broadcast date" TEXT, "Run time" TEXT, "Viewers  ( in millions ) " TEXT, "Archive" TEXT)

When there are 7.5 million viewers what is the archive?
SELECT "Archive" FROM table_2411 WHERE "Viewers (in millions)" = '7.5'
SELECT "Archive" FROM "table_2411" WHERE "Viewers (in millions)" = '7.5'