CREATE TABLE table_name_38 (no_in_series NUMBER, director VARCHAR2, production_code VARCHAR2)

What is the total series numbers that is directed by Jefferson Kibbee and has a production code of 2398191?
SELECT SUM(no_in_series) FROM table_name_38 WHERE director = "jefferson kibbee" AND production_code = "2398191"
SELECT SUM("no_in_series") FROM "table_name_38" WHERE "2398191" = "production_code" AND "director" = "jefferson kibbee"