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

### Instruction:
A third of the contestants at a singing competition are female, and the rest are male. If there are 18 contestants in total, how many of them are male?

### Response:
There are 18/3 = 6 female contestants.
There are 18-6 = <<18-6=12>>12 male contestants.
#### 12