input: Write a function to add two large numbers represented as strings. The function should handle the addition by first reversing the strings, then iterating over the digits and adding them with respect to carry. If there's a remaining carry after the final addition, it should be added to the result.
  
  def add_large_numbers(num1, num2):
      num1 = num1[::-1]
      num2 = num2[::-1] 
      carry = 0
      result = "" 
     
      for i in range(max(len(num1), len(num2))): 
          if i < len(num1):
              digit1 = int(num1[i])
          else:
              digit1 = 0
  
          if i < len(num2):
              digit2 = int(num2[i])
          else:
              digit2 = 0
         
          sum_total = digit1 + digit2 + carry  
          carry = sum_total // 10  
  
          result += str(sum_total % 10) 
  
      if carry > 0:  
          result += str(carry) 
  
      return result[::-1]
  
  assert add_large_numbers("111", "1337") == "1448"
  assert add_large_numbers("123", "456") == "579"
  assert add_large_numbers("999", "999") == "1998"
  assert add_large_numbers("1", "999") == "1000"
  assert add_large_numbers("0", "0") == "0"
output: def add_large_numbers(num1, num2):
      num1 = num1[::-1]
      num2 = num2[::-1] 
      carry = 0
      result = "" 
     
      for i in range(max(len(num1), len(num2))): 
          if i < len(num1):
              digit1 = int(num1[i])
          else:
              digit1 = 0
  
          if i < len(num2):
              digit2 = int(num2[i])
          else:
              digit2 = 0
         
          sum_total = digit1 + digit2 + carry  
          carry = sum_total // 10  
  
          result += str(sum_total % 10) 
  
      if carry > 0:  
          result += str(carry) 
  
      return result[::-1]