65 + 9 + 5 = 65 + 5 + 9 = 70 + 9 = 79
76 + 8 + 4 = 76 + 4 + 8 = 80 + 8 = 88
20 + 7 + 3 + 30 = 20 + (7 + 3) + 30 = 20 + 10 + 30 = 30 + 30 = 60
36 + 8 + 2 = (30 + 6) + (8 + 2) = 30 + 6 + 10 = 30 + 10 + 6 = 46
47 + 6 + 4 = (40 + 7) + (6 + 4) = 40 + 7 + 10 = 40 + 10 + 7 = 57
50 + 9 + 1 + 40 = 50 + (9 + 1) + 40 = 50 + 10 + 40 = 60 + 40 = 100