prompt: 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?
messages.content: 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 $250,000.  How much did it cost?
messages.role: user
messages.content: The first 8 years cost 8*10,000=$<<8*10000=80000>>80,000
  The next 18-8=<<18-8=10>>10 years
  They cost 10000*2=$<<10000*2=20000>>20,000 per year
  So they cost 20,000*10=$<<20000*10=200000>>200,000
  So the cost was 200,000+80,000=$<<200000+80000=280000>>280,000
  Adding in the cost of tuition brings the cost to 250,000+280,000=$<<250000+280000=530000>>530,000
  Since John pays for half the cost of raising the child, he pays $530000/2 = <<530000/2=265000>>265000
  #### 265000
messages.role: assistant