The lowest term of 40 over 56 is 5/7
The lowest term of 66 over 168 is 33/56
56 over 108 reduces to 14 over 27
16/56 = 2/7
7/8
4/7
28/39
56 over 42 (56/42) in lowest terms is 4/3 or 11/3
14 over 56 as a fraction in its lowest terms = 1/4
306 over 56 in lowest terms is 153 over 28.
14/25
40/56 = 5/7
56/72 reduces to 7/9