CREATE TABLE table_30382 ("\\u2116" FLOAT, "#" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( millions ) " TEXT)

What was the number of episodes whose production code is 7ABB21?
SELECT COUNT("#") FROM table_30382 WHERE "Production code" = '7ABB21'
SELECT COUNT("#") FROM "table_30382" WHERE "Production code" = '7ABB21'