user: ### NOW ANSWER:
Question: In the 2005 season, how many races did the 15th place team complete?
Columns: ['Season', 'Series', 'Team Name', 'Races', 'Poles', 'Wins', 'Points', 'Final Placing']
Types: ['text', 'text', 'text', 'real', 'real', 'real', 'text', 'text']
Sample row: ['2003', 'Formula Three Sudamericana', 'Dragão Motorsport', 4.0, 0.0, 0.0, '11', '18th']
SQL:

assistant: SELECT AVG("Races") FROM "Table" WHERE "Final Placing" = '15th' AND "Season" = '2005';