user: Question: How many total episodes aired over all seasons with 7.79 million viewers?
Columns: ['Season', 'Network', 'Time slot', 'Season premiere', 'Season finale', 'Episode count', 'TV season', 'Season rank', 'Viewers (in millions)']
Types: ['real', 'text', 'text', 'text', 'text', 'real', 'text', 'text', 'real']
Sample row: [1.0, 'NBC', 'Monday 10:00 pm', 'January 3, 2005', 'May 23, 2005', 16.0, '2004–2005', '#19', 13.9]
SQL:

assistant: SELECT SUM("Episode count") FROM "Table" WHERE "Viewers (in millions)" = 7.79;