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

### Instruction:
John buys a gaming PC for $1200.  He decides to replace the video card in it. He sells the old card for $300 and buys a new one for $500.  How much money did he spend on his computer, counting the savings from selling the old card?

### Response:
 John alinunua kompyuta yake kwa $1200
Aliuza kadi ya zamani kwa $300
Pesa alizotumia kwenye kompyuta ni $1200 - $300 = $<<1200-300=900>>900
Alinunua kadi mpya kwa $500
Jumla ya pesa alizotumia kwenye kompyuta ni $900 + $500 = $<<900+500=1400>>1400