(57*34+812 754:27):18=
(57*34+812 754:27):18= 1780 1 3 2 4 1) 57 х34 228 171 1938 2)812754 | 27 81 30102 27 27 54 54 0 3) 30102 + 1938 32040 4) 32040 | 18 18 1780 140 126 144 144 0
(57*34+812 754:27):18=1780