∀ {R : Type u_1} {M : Type u_5} [inst : Semiring R] [inst_1 : AddCommMonoid M] [inst_2 : Module R M]
  {p q : Submodule R M} (hpq : p ≤ q) (x : ↥p), (Submodule.comapSubtypeEquivOfLe hpq).symm x = ⟨⟨↑x, ⋯⟩, ⋯⟩