∀ {F : Type u_1} {α : Type u_2} {β : Type u_3} [inst : Group α] [inst_1 : DivisionMonoid β] [inst_2 : FunLike F α β]
  [MonoidHomClass F α β] (m : F) {f g : Filter α}, Filter.map (⇑m) (f / g) = Filter.map (⇑m) f / Filter.map (⇑m) g