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

### Instruction:
What is the total number of episodes listed with a production code of 306?

### Inputs:
table_name: table, columns: ['No.', '#', 'Title', 'Directed by', 'Written by', 'Canadian air date', 'U.S. air date', 'Production code', 'Canadian viewers (million)']

### Response:
SELECT COUNT # FROM table WHERE Production code = 306