user: ### NOW ANSWER:
Question: What is the series number of the episode watched by 10.89 million viewers?
Columns: ['Series #', 'Season #', 'Episode title', 'Writer(s)', 'Director', 'U.S. viewers (millions)', 'Original air date']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [24.0, 1.0, '" How Betty Got Her Grieve Back "', 'Silvio Horta & Marco Pennette', 'James Hayman', '11.16', 'September27,2007']
SQL:

assistant: SELECT MAX("Series #") FROM "Table" WHERE "U.S. viewers (millions)" = '10.89';