*******************************************

        Input data file [A.txt] 

 *******************************************

      A[ ] = 4 294 967 296 908            

      B[ ] = 42 9496 7296              

 *******************************************


*****************************************************

           Output data File = [B.txt]       

*****************************************************

*****************************************************

                 C[ ] = A[ ] + B[ ]       

*****************************************************

   KA = 13

 A[ ] =  4 2949 6729 6908 

   KB = 10

 B[ ] =      42 9496 7296 

   KC = 13

 C[ ] =  4 2992 6226 4204 

*****************************************************

            A[ ]*B[KK]  for KK=1 to KB    

*****************************************************

  A[ ]*4 =  17179869187632

    D[1] =  17179869187632

  A[ ]*2 =    8589934593816

    D[2] =  180388626470136

  A[ ]*9 =    38654705672172

    D[3] =  1842540970373532

  A[ ]*4 =     17179869187632

    D[4] =  18442589572922952

  A[ ]*9 =      38654705672172

    D[5] =  184464550434901692

  A[ ]*6 =       25769803781448

    D[6] =  1844671274152798368

  A[ ]*7 =        30064771078356

    D[7] =  18446742806299062036

  A[ ]*2 =          8589934593816

    D[8] =  184467436652925214176

  A[ ]*9 =          38654705672172

    D[9] =  1844674405183957813932

  A[ ]*6 =           25769803781448

   D[10] =  18446744077609381920768

*****************************************************

   KD = 23

 D[ ] = A[ ] x B[ ] =  184 4674 4077 6093 8192 0768 

*****************************************************