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

### Instruction:
How many people wrote the episode that had 6.34 million viewers?

### Inputs:
table_name: table, columns: ['Episode', 'Title', 'Directed by', 'Written by', 'Original airdate', 'Duration', 'Viewership']

### Response:
SELECT COUNT Written by FROM table WHERE Viewership = 6.34 million