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

### Instruction:
How many million u.s. viewers saw the episode that was directed by roger young and written by debra j. fisher?

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

### Response:
SELECT U.S. viewers (million) FROM table WHERE Directed by = Roger Young AND Written by = Debra J. Fisher