conversations.from: human
conversations.value: Please show me the solution for: John received 20 gifts on his 12th birthday.  He received 8 fewer gifts on his 13th birthday.  How many total gifts did he receive between those two birthdays?
conversations.from: assistant
conversations.value: He got 20-8=12 gifts on his 13th birthday
  So he got 20+12=32 total gifts