conversations.from: human
conversations.value: John needs to get a new seeing-eye dog.  The adoption fee cost $150 for an untrained dog.  It then takes 12 weeks of training which costs $250 a week.  After the training, she needs certification which costs $3000 but her insurance covers 90% of that.  What is her out-of-pocket cost?
  How to solve this?
conversations.from: assistant
conversations.value: The training cost 250*12=$3000
  The insurance pays for 3000*.9=$2700 for certification
  That means she needs to pay 3000-2700=$300
  So her total cost was 150+300+3000=$3450