It is simply: 78/1
There is none.
It is 15/8.
It is 31/8.
Cannot be done.
It is 3/1 as an improper fraction
78/9 = 26/3
111 over one is the improper fraction.
2 7/8 = 23/8.
1 and 1/4 as an improper fraction is 5/4
improper fraction for twenty = 20/1
improper fraction for 103 = 103/1