old_contents: print ("I will now count my chickens:")
  
  print ("Hens", 25 + 30 / 6) 
  print ("Roosters", 100 - 25 * 3 % 4)
  
  print ("Now I will count the eggs:") 
   
  print (3 + 2 + 1 - 5 + 4 % 2 - 1 / 4 + 6)
  
  print ("Is is true that 3 + 2 < 5 - 7?")
  
  print (3 + 2 < 5 - 7)  
   
  print ("What is 3 + 2?", 3 + 2)
  print ("What is 5 - 7?", 5 - 7)
   
  print ("Oh, that's why it's False.") 
   
  print ("How about some more.")
  
  print ("Is it greater?", 5 > -2) 
  print ("Is it greater or equal?", 5 >= -2)
  print ("Is it less or euqal?", 5 <= -2)
new_contents: # prompt
  print ("I will now count my chickens:")
  # 30 / 6 float 5.0
  print ("Hens", 25 + 30 / 6) 
  # 75 mod 4 = 18 (3)
  print ("Roosters", 100 - 25 * 3 % 4)
  # prompt
  print ("Now I will count the eggs:") 
  # 4 % 2 = 0, 1 / 4 = float 0.25
  print (3 + 2 + 1 - 5 + 4 % 2 - 1 / 4 + 6)
  # prompt 
  print ("Is is true that 3 + 2 < 5 - 7?")
  # 5 < -2 is false
  print (3 + 2 < 5 - 7)  
  # 5 
  print ("What is 3 + 2?", 3 + 2)
  # -2
  print ("What is 5 - 7?", 5 - 7)
  # prompt 
  print ("Oh, that's why it's False.") 
  # prompt 
  print ("How about some more.")
  # 5 greater than -2 is true 
  print ("Is it greater?", 5 > -2) 
  # 5 greater than equal -2 is true
  print ("Is it greater or equal?", 5 >= -2)
  # 5 less than equal -2 is false
  print ("Is it less or euqal?", 5 <= -2)
subject: add comments to ex3.py