8 + 17 + 26 + ... + 125 + 134 = ?

`8  + 17 + 26 + ... + 125 + 134`

`= (8 . 1) + (8 . 2 + 1) + (8 . 3 + 2) + ... + (8 . 14 + 13) + (8 . 15 + 14)` 

`= 8 . 1 + 8 . 2 + 8 . 3 + ... + 8 . 15 + 1 + 2 + .. + 13 + 14`

`= 8 . ( 1 + 2 + 3 + ... + 15 ) + (1 + 2 + 3 + ... + 13 + 14)`

`= 8 . [(1 + 14) + (2 + 13) + ... + (7 + 8) + 15] + [(1 + 14) + (2 + 13) + ... + (7 + 8)]`

`= 8 . ( 15 + 15 + ... + 15 + 15 ) + ( 15 + 15 + ... + 15 )`

`= 8 . 15 . 8 + 15 . 7`

`= 960 + 105 = 1065`