Prevod z desiatkovej sústavy do osmičkovej a naopak:

napr. :   213 : 8 = 26 zv. 5

                       26 : 8 = 3 zv. 2

                          3 : 8 = 0 zv. 3

                                                                                                               213₁₀ = 325₈

a naopak:

                    3                   2                    5

                            *                    *                    *

                           8²       +         8¹         +        8⁰

                       3*64      +        2*8         +       5*1 =

                       192       +         16         +         5   = 213