conversations.from: human
conversations.value: I need help with this problem:
  John pays for half the cost of raising a child.  It cost $10,000 a year for the first 8 years and then twice that much per year until the child is 18.  University tuition then costs $250,000.  How much did it cost?
conversations.from: assistant
conversations.value: The first 8 years cost 8*10,000=$80,000
  The next 18-8=10 years
  They cost 10000*2=$20,000 per year
  So they cost 20,000*10=$200,000
  So the cost was 200,000+80,000=$280,000
  Adding in the cost of tuition brings the cost to 250,000+280,000=$530,000
  Since John pays for half the cost of raising the child, he pays $530000/2 = 265000