CREATE TABLE table_3631 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Director" CLOB, "Writer ( s ) " CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( million ) " CLOB)

What is the production code when the u.s. viewers (million) is 11.76?
SELECT "Production code" FROM table_3631 WHERE "U.S. viewers (million)" = '11.76'
SELECT "Production code" FROM "table_3631" WHERE "U.S. viewers (million)" = '11.76'