conversations.from: human
conversations.value: I would love to understand how to solve this problem: John buys 3 dress shirts.  They sell for $20 each.  He also has to pay 10% tax on everything.  How much did he pay in total?
  Can you explain?
conversations.from: assistant
conversations.value: The shirts cost 3*$20=$60 before tax
  The tax cost $60*.1=$6
  So in total they paid $60+$6=$66