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

### Instruction:
In a field of 500 clovers, 20% have four leaves and one quarter of these are purple clovers. Assuming these proportions are exactly correct, how many clovers in the field are both purple and four-leaved?

### Response:
 มีโคลเวอร์ 4 ใบ 100 ต้น
มีโคลเวอร์สีม่วง 4 ใบ 25 ต้น