What is the average of the Series #s that were directed by Matthew Penn?
CREATE TABLE table_name_42 (series__number INTEGER, directed_by VARCHAR)
SELECT AVG(series__number) FROM table_name_42 WHERE directed_by = "matthew penn"
### Context: CREATE TABLE table_name_42 (series__number INTEGER, directed_by VARCHAR) ### Question: What is the average of the Series #s that were directed by Matthew Penn? ### Answer: SELECT AVG(series__number) FROM table_name_42 WHERE directed_by = "matthew penn"