The answer is 31.
9 + 4 + 7 + 8 = 28
16 + 2 + 9 + 4 + 7 + 8 is = 18 + 9 + 4 + 7 + 8 = 27 + 4 + 7 + 8 = 31 + 7 + 8 = 38 + 8 = 46
8 + 9 + 7 + 1 + 11111 = 11136
4 + 5 + 6 + 7 + 8 + 9 = 39
9 + 8 + 7 + 6 + 5 + 4 = 39
2 + 4 + 8 + 6 + 3 + 7 + 9 + 8 = 47
It's a magnificent example of pure nonsense.
5*(-8)+7*(9) = 23
7 plus 2 is 9. 9 plus 8 is 17. 17 plus 3 is 20.
9 + 6 + 9 + 6 + 9 + 8 + 5 + 2 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 99
9 + 8 + 7 + 6 + 5 + 4 + 3 = 42
11 + 11 + 11 + 10 + 9 + 9 + 9 + 8 + 8 + 8 + 8 + 8 + 8 + 7 + 2 = 127