CREATE TABLE table_23502 ("No. in series" TEXT, "No. in season" TEXT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( millions ) " TEXT)

How many millions of people in the US saw the episode with production code 214?
SELECT "U.S. viewers (millions)" FROM table_23502 WHERE "Production code" = '214'
SELECT "U.S. viewers (millions)" FROM "table_23502" WHERE "Production code" = '214'