Turn single fraction into multiple fraction expression
Something like this?
(F1/F2 /. c/f -> Defer[c/f]) /. aa_*bb_Defer -> Defer[aa]*bb
(* Out[15]= c/f (d e)/(g h i k) *)
Reordering will require a different operator e.g NonCommutativeMultiply
on the rhs of the second replacement rule, and then some further formatting to make it look like ordinary multiplication.
--- edit ---
Except formatting NonCommutativeMultiply
to look like ordinary multiplication seems to get one into a situation where the display is nice but it won't cut-and-paste the way it looks. Instead we can just use more Defer
magic.
(F1/F2 /. c/f -> Defer[c/f]) /. aa_*bb_Defer -> Defer[Defer[aa]*bb]
(* Out[32]= (d e)/(g h i k) c/f *)
--- end edit ---