CREATE TABLE table_2408 ("Episode" TEXT, "Broadcast date" TEXT, "Run time" TEXT, "Viewers  ( in millions ) " TEXT, "Archive" TEXT)

When there are 7.4 million viewers how many episodes are there?
SELECT COUNT("Episode") FROM table_2408 WHERE "Viewers (in millions)" = '7.4'
SELECT COUNT("Episode") FROM "table_2408" WHERE "Viewers (in millions)" = '7.4'