CREATE TABLE table_22894 ("No." FLOAT, "#" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( million ) " TEXT)

How many u.s. viewers (million) have the number 16?
SELECT "U.S. viewers (million)" FROM table_22894 WHERE "#" = '16'
SELECT "U.S. viewers (million)" FROM "table_22894" WHERE "#" = '16'