Sum Two Numbers Up To 10000 Digits Presented in Arrays

using System;
using System.Numerics;
using System.Collections.Generic;

class SumTwoIntsPresentedInArrays
{
    static void PrintSumOfArrays(List<byte> arrSum)
    {
        Console.WriteLine("The sum ot the numbers is: ");
        foreach (var number in arrSum)
        {
            Console.Write(number);
        }
        Console.WriteLine();

    }
    static List<byte> SumArrays(byte[] array1, byte[] array2)
    {
        byte transferValue = 0;
        byte tempSum = 0;
        List<byte> arrSum = new List<byte>();

        for (int i = 0; i < array1.Length; i++)
        {
            array1[i] += transferValue;                                 //Carry over 1 or 0 to first value
            transferValue = (byte)((array1[i] + array2[i]) / 10);        //divide the sum at 10 and get 1 or 0, (sum range 0-18)
            tempSum = (byte)((array1[i] + array2[i]) % 10);            //Divide for reminder at 10 and get the value
            arrSum.Add(tempSum);                                       //Put that value into the list
        }
        arrSum.Reverse();
        if (arrSum[0] == 0)
            arrSum.Remove(0);
        return arrSum;
    }
    static byte[] PutStringNumberInArray(string strNumber, int maxLenght)
    {
        maxLenght = maxLenght + 1;
        byte[] arrayNum = new byte[maxLenght];

        for (int i = strNumber.Length; i > 0; i--)
        {
            arrayNum[strNumber.Length - i] = byte.Parse(strNumber[i - 1].ToString());
        }
        return arrayNum;
    }
    static void Main()
    {
        Console.WriteLine("First number");
        string numberA = Console.ReadLine();
        Console.WriteLine("Second number");
        string numberB = Console.ReadLine();
        int longerNum = Math.Max(numberA.Length, numberB.Length);

        byte[] firstArr = PutStringNumberInArray(numberA, longerNum);
        byte[] seconfArr = PutStringNumberInArray(numberB, longerNum);

        List<byte> arraySum = SumArrays(firstArr, seconfArr);
        PrintSumOfArrays(arraySum);

        //BigInteger first = BigInteger.Parse(numberA);                       //Just for check
        //BigInteger second = BigInteger.Parse(numberB);
        //Console.WriteLine("Sum with BigInteger:");
        //Console.WriteLine(first + second);

    }
}