CREATE TABLE table_73790 ("Series #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Viewers  ( in millions ) " TEXT)

How many viewers (in millions) did episode 1 have?
SELECT "Viewers (in millions)" FROM table_73790 WHERE "Series #" = '1'
SELECT "Viewers (in millions)" FROM "table_73790" WHERE "Series #" = '1'