17.1/9 = 1,9

20,4/4 = 5,1

3,164/8= 0,3955

17.1    : 9                    20.4   :      4                           3.164    : 8

  9       ---------             20          ----------                    2 4        ------------

-------     1.9               --------        5.1                    -------------    0.3955

  81                               0 4                                          76

  81                                  4                                          72

-------                          --------                                    -------

     0                                  0                                           44

                                                                                      40

                                                                                    -------

                                                                                        40

                                                                                        40

                                                                                      -------

                                                                                           0