conversations.from: human
conversations.value: Solve the math problem: John assembles computers and sells prebuilt computers as a business. The parts for the computer cost $800.  He sells the computers for 1.4 times the value of the components.  He manages to build 60 computers a month.  He has to pay $5000 a month in rent and another $3000 in non-rent extra expenses a month.  How much profit does he make a month?
conversations.from: assistant
conversations.value: He sells each computer for 1.4*800=$1120
  That means he makes a profit of 1120-800=$320 per computer
  So he makes 320*60=$19200 from selling computers
  He has extra expenses of 5000+3000=$8000 a month
  So his profit is 19200-8000=$11,200