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

### Instruction:
How many episodes had the us viewers (millions) figure of 5.0?

### Inputs:
table_name: table, columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'US viewers (millions)']

### Response:
SELECT COUNT No. in season FROM table WHERE US viewers (millions) = 5.0