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

### Instruction:
How many millions of viewers were there for the episode with a run time of 18:00?

### Inputs:
table_name: table, columns: ['Episode', 'Broadcast date', 'Run time', 'Viewers (in millions)', 'Archive']

### Response:
SELECT Viewers (in millions) FROM table WHERE Run time = 18:00