prompt: There are 28 students in a class. Two-sevenths of them were absent last Monday. How many students were present last Monday?
messages.content: There are 28 students in a class. Two-sevenths of them were absent last Monday. How many students were present last Monday?
messages.role: user
messages.content: 28 x 2/7 = <<28*2/7=8>>8 students were absent last Monday.
  So, 28 - 8 = <<28-8=20>>20 students were present last Monday.
  #### 20
messages.role: assistant