CREATE TABLE table_18044 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" FLOAT, "U.S. viewers  ( millions ) " TEXT)

How many millions of U.S. viewers watched episode 185?
SELECT "U.S. viewers (millions)" FROM table_18044 WHERE "No. in series" = '185'
SELECT "U.S. viewers (millions)" FROM "table_18044" WHERE "No. in series" = '185'