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

### Instruction:
Rocky boxed 190 fights in his career.  50 percent of his fights were knockouts, and 20 percent of the knockouts were in the first round.  How many knockouts did Rocky have in the first round?

### Response:
 การชกล้ำ: 190(.50)=95
รอบแรก: 95(.2)=19