4/1112 = 1/278
Well, darling, 1112 in its simplest form is just 1112. It's already as simple as it gets because 1112 is a prime number, meaning it can only be divided by 1 and itself. So, there you have it, no need to simplify further.
If you mean 11/12 then it is in its simplest form
1/4 is in its simplest form.
4/5 is in its simplest form.
4/5 is the simplest form.
4/S is in its simplest form.
225/4 is in its simplest form.
4/7 is in its simplest form.
31/4 is in its simplest form.
21/4 is in its simplest form.
4/5 is in its simplest form.
4/15 is already in simplest form.4/15 is in its simplest form.