CREATE TABLE table_28790 ("No." FLOAT, "#" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Patient Portrayer" TEXT, "Original air date" TEXT, "Production code" TEXT)

How many are directed by episodes with the production code 3T5009?
SELECT COUNT("Directed by") FROM table_28790 WHERE "Production code" = '3T5009'
SELECT COUNT("Directed by") FROM "table_28790" WHERE "Production code" = '3T5009'