Table schema:
CREATE TABLE table_25246990_2 (us_viewers__millions_ VARCHAR, written_by VARCHAR, no_in_series VARCHAR)

Question: How many U.S. viewers in millions watched the number 7 episode in the series that was written by Jed Spingarn?
SQL: SELECT us_viewers__millions_ FROM table_25246990_2 WHERE written_by = "Jed Spingarn" AND no_in_series = "7"