Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_27484 ( "No. in series" text, "Title" text, "Directed by" text, "Written by" text, "U.S. viewers (millions)" text, "Original U.S. air date" text, "Prod. code" text )

### Question ###
How many U.S. viewers in millions watched the number 7 episode in the series that was written by Jed Spingarn?

### Accurate SQL ###

SELECT "U.S. viewers (millions)" FROM table_27484 WHERE "Written by" = 'Jed Spingarn' AND "No. in series" = '7'