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

### Instruction:
Roman the Tavernmaster has $20 worth of gold coins. He sells 3 gold coins to Dorothy. After she pays him, he has $12. How many gold coins does Roman have left?

### Response:
 Dorothy alilipa $12 kwa sarafu 3 za dhahabu hivyo kila sarafu ya dhahabu inauzwa kwa $12/3 = $<<12/3=4>>4
Mmiliki wa Kibanda cha Baa alikuwa na sarafu za dhahabu zenye thamani ya $20 ambazo ni sawa na $20/$4 = <<20/4=5>>5 sarafu za dhahabu
Roman sasa ana $12 zenye thamani ya sarafu za dhahabu ambazo ni $12/$4 = <<12/4=3>>3
Roman ana sarafu 5-3 = <<5-3=2>>2 za dhahabu zilizobaki