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

### Instruction:
There were 672 balloons that were either green, blue, yellow, or red. They were divided into equal groups and then Anya took half of the yellow ones home. How many balloons did Anya take home?

### Response:
 มีลูกลอยอยู่ 672/4 = <<672/4=168>>168 ลูกในแต่ละสี
อัญชันเอาครึ่งหนึ่งของลูกลอยสีเหลือง ซึ่งหมายความว่า 168 * (1/2) = 84 ลูก