human
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 $500. How much money did he spend on his computer, counting the savings from selling the old card?
assistant
How much did John spend on the video card? ** He spent an extra 500-300=$<<500-300=200>>200 on the video card
How much did John spend on his computer? ** That means the total cost was 1200+200=$<<1200+200=1400>>1400
#### 1400