∀ {R : Type u} {S : Type v} [inst : NonUnitalNonAssocSemiring R] [inst_1 : SetLike S R]
  [inst_2 : NonUnitalSubsemiringClass S R] (s : S),
  NonUnitalSubsemiringClass.toNonUnitalNonAssocSemiring s = NonUnitalSubsemiringClass.toNonUnitalNonAssocSemiring s