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

### Instruction:
When "i feel good" is the title and joe sachs is the writer how many series numbers are there?

### Inputs:
table_name: table, columns: ['Series #', 'Season #', 'Title', 'Directed by', 'Written by', 'Original air date']

### Response:
SELECT COUNT Series # FROM table WHERE Written by = Joe Sachs AND Title = "I Feel Good"