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 $500.  How much money did he spend on his computer, counting the savings from selling the old card?
He spent an extra 500-300=$
<gadget id="calculator">500-300</gadget>
<output>200</output>
200 on the video card.
That means the total cost was 1200+200=$
<gadget id="calculator">1200+200</gadget>
<output>1_400</output>
1400.

<result>1_400</result>