input: Write a function to add two large numbers represented as strings and return the result as a string. The function should handle the sizes of the input strings appropriately by adding corresponding digits from the end of both strings, ensuring that the carry is handled properly.
  def add_large_numbers(num1, num2):
      num1 = num1[::-1]
      num2 = num2[::-1]
      carry = 0
      result = ""
  
      # Iterate over the length of the length of larger string
      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)
  
      # Add remaining carry
      if carry > 0:
          result += str(carry)
  
      return result[::-1]
  
  assert add_large_numbers("111", "1337")=="1448"
  assert add_large_numbers("0", "3")=="3"
  assert add_large_numbers("99", "1")=="100"
  assert add_large_numbers("874", "787")=="1661"
  assert add_large_numbers("999", "999")=="1998"
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]