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

### Instruction:
How many episode numbers are there on the show whose first couple was Stuart and Pegah>?

### Inputs:
table_name: table, columns: ['#', 'Airdate', 'No. of couples', '1st couple', '2nd couple', '3rd couple', '4th couple', 'Viewers (millions)', 'ITV1 weekly ranking']

### Response:
SELECT COUNT # FROM table WHERE 1st couple = Stuart and Pegah