old_contents: '''
  my first program in python
  '''
  
  import sys
  numbers = sys.argv[1:]
  a,b = int(numbers[0]),int(numbers[1])
  
  print("the number you've passed are:")
  print(a,b)
  
  print("a+b=", a+b)
new_contents: '''
  my first program in python
  '''
  
  import sys
  numbers = sys.argv[1:]
  a,b = int(numbers[0]),int(numbers[1])
  
  print("the number you've passed are:")
  print(a,b)
  
  print("a+b=", a+b)
  print("a**b=", a**b)
  print("a/b=", a/b)
  print("a//b=", a//b)
  print("a%b=", a%b)
  
subject: Add some maths