user: Question: How many millions of U.S. viewers watched the episode with the production code of 6AKY07?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [107.0, 1.0, '"The Mastodon in the Room"', 'Ian Toynton', 'Hart Hanson', 'September23,2010', '6AKY01', '9.79']
SQL:

assistant: SELECT "U.S. viewers (millions)" FROM "Table" WHERE "Production code" = '6AKY07';