128 X 3 = 384
49 + 50 = 99
99 X 2 = 198
70 + 7 = 77
100 + 3 = 103
10 + 3 = 13
128 X 77 = 9856
103 X 13 = 1339

384 + 198 = 582
582 + 9856 = 10438
10438 + 1339 = 11777