conversations.from: human
conversations.value: John's new computer cost $1500.  He needs to get a monitor and other peripherals that cost 1/5 that much.  He also wants to upgrade the $300 video card in the base computer with one that costs twice as much.  How much did he spend?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: The peripherals cost 1500/5=$300
  The video card cost 300*2=$600
  So it cost 600-300=$300 more
  That means the total cost was 1500+300+300=$2100