CREATE TABLE table_22347090_6 (no_in_series INTEGER, production_code VARCHAR)
SELECT MIN(no_in_series) FROM table_22347090_6 WHERE production_code = "3X7554"
ซีรีส์เรื่องใดมีรหัสการผลิต 3x7554
What episode number in the series had a production code of 3x7554?