∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_2} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] {H : Type u_3} [inst_3 : TopologicalSpace H] {I : ModelWithCorners 𝕜 E H} {M : Type u_4}
  [inst_4 : TopologicalSpace M] [inst_5 : ChartedSpace H M] {s : Set M} {V : Type u_18} [inst_6 : NormedAddCommGroup V]
  [inst_7 : NormedSpace 𝕜 V] {f : M → 𝕜} {g : M → V},
  MDifferentiableOn I (modelWithCornersSelf 𝕜 𝕜) f s →
    MDifferentiableOn I (modelWithCornersSelf 𝕜 V) g s →
      MDifferentiableOn I (modelWithCornersSelf 𝕜 V) (fun p => f p • g p) s