Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
The half-hour newscast includes 12 minutes of national news, 5 minutes of international news, 5 minutes of sports, and 2 minutes of weather forecasts. The rest is advertisements. How many minutes of advertising are in the newscast?

### Response:
The total length of the newscast is 30 minutes.
The length of the newscast without advertising is 12 + 5 + 5 + 2 = <<12+5+5+2=24>>24 minutes.
Therefore, the length of the advertising is 30 - 24 = <<30-24=6>>6 minutes.
#### 6

