From Left to The Right [#C]

using System;

namespace FromLeftToTheRight
{
    public class Program
    {
        public static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            for (int i = 0; i < n; i++)
            {
                string input = Console.ReadLine();

                string[] numbers = input.Split(" ");
                long firstNumber = long.Parse(numbers[0]);
                long secondNumber = long.Parse(numbers[1]);

                if (firstNumber > secondNumber)
                {
                    Console.WriteLine(SumTheDigitsOfNumber(firstNumber));
                }
                else
                {
                    Console.WriteLine(SumTheDigitsOfNumber(secondNumber));
                }
            }
        }

        private static int SumTheDigitsOfNumber(long number)
        {
            int sum = 0;

            while (number != 0)
            {
                sum += (int)(number % 10);
                number /= 10;
            }

            return Math.Abs(sum);
        }
    }
}