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

### Instruction:
Can you tell me the average December rhat has the Opponent of @ toronto maple leafs?

### Inputs:
table_name: table, columns: ['Game', 'December', 'Opponent', 'Score', 'Record']

### Response:
SELECT AVG December FROM table WHERE Opponent = @ toronto maple leafs