Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
In the 2005 season, how many races did the 15th place team complete?

### Inputs:
table_name: table, columns: ['Season', 'Series', 'Team Name', 'Races', 'Poles', 'Wins', 'Points', 'Final Placing']

### Response:
SELECT AVG Races FROM table WHERE Final Placing = 15th AND Season = 2005