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

### Instruction:
There are 50 children at the party. Three-fifths of them are boys. How many of the children are girls?

### Response:
 50 x (3/5) = 30 เด็กเป็นเด็กชาย
ดังนั้น มีเด็กสาว 50 - 30 = 20 คน