22/66 = (2 × 11) / (2 × 3 × 11) = 1/3
18/300 = (2 × 3 × 3) / (2 × 2 × 3 × 5 × 5) = 3/50
75/100 = (3 × 5 × 5) / (2 × 2 × 5 × 5) = 3/4
40/64 = (2 × 2 × 2 × 5) / (2 × 2 × 2 × 2 × 2 × 2) = 5/8
120/180 = (2 × 2 × 2 × 3 × 5) / (2 × 2 × 3 × 3 × 5) = 2/3