prompt: During a staff meeting, 50 doughnuts were served. If each of the 19 staff ate 2 doughnuts, how many doughnuts are left?
messages.content: During a staff meeting, 50 doughnuts were served. If each of the 19 staff ate 2 doughnuts, how many doughnuts are left?
messages.role: user
messages.content: The staff had eaten a total of 19 x 2 = <<19*2=38>>38 doughnuts.
  So, 50 - 38 = <<50-38=12>>12 doughnuts are left.
  #### 12
messages.role: assistant