32 : 8 : 2 × 6 : 3 = 4 : 2 × 6 : 3 = 2 × 6 : 3 = 12 : 3 = 4
16 : 8 × 7 + 66 = 2 × 7 + 66 = 14 + 66 = 80
30 : 5 + 3 × 9 = 6 + 27 = 33
24 : 4 + 5 × 2 = 6 + 10 = 16