8 . {5 - [-3 + 4 . (-1 + 1) + 2] + 1 + 8}=
8 . {5 - [-3 + 4 . 0 + 2] + 1 + 8}=
8 . {5 - [-3 + 0 + 2] + 1 + 8}=
8 . {5 - [-3 + 2] + 1 + 8}=
8 . {5 - (-1) + 1 + 8}=
8 . {6 + 1 + 8}=
8 . {7 + 8}=
8 . 15= 120
