CREATE TABLE table_18005 ("No." FLOAT, "#" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( million ) " CLOB)

What is the # for the episode with a Production code of 3T7057?
SELECT "#" FROM table_18005 WHERE "Production code" = '3T7057'
SELECT "#" FROM "table_18005" WHERE "Production code" = '3T7057'