Find : (48)³

Here, a = 4 and b = 8
Therefore, we have :
R = 8 ÷ 4 = 2
N₁ = 4³= 64
N₂ = 64 * 2 = 128
N₃ = 128 * 2 = 256
N₄ = 256 * 2 = 512

Thus, the working is as follows : 

       N₁          3 * N₂          3 * N₃          N₄
=     64          3 * 128         3 * 256        512
=     64            384              768            512
=     64            384              768              2
                                              51
=     64            384               819              2
=     64            384                  9              2
                         81
=     64            465                  9              2
=     64                5                  9              2
       46
=    110                5                  9              2
=  110592