It is 39/5, of course!
It is: 7.8 = 39/5 in its simplest form
39 1/5 or as an improper fraction, 196/5
7.8 as an improper fraction in its simplest form is 39/5
1.25
0.0345
0.7143
It is 8/5.
Since the numbers 5 and 39 share no common positive integer factors, the proper fraction 5/39 is already expressed in its simplest form.
45 divided by 117 in its simplest form as a fraction is 5/13
8.8
9.6