∀ {𝕜 : Type u_1} {E : Type u_4} {F : Type u_6} {G : Type u_8} {𝕜' : Type u_11} [inst : NontriviallyNormedField 𝕜]
  [inst_1 : NontriviallyNormedField 𝕜'] [inst_2 : NormedAlgebra 𝕜 𝕜'] [inst_3 : SeminormedAddCommGroup E]
  [inst_4 : NormedSpace 𝕜 E] [inst_5 : NormedSpace 𝕜' E] [inst_6 : IsScalarTower 𝕜 𝕜' E]
  [inst_7 : SeminormedAddCommGroup F] [inst_8 : NormedSpace 𝕜 F] [inst_9 : NormedSpace 𝕜' F]
  [inst_10 : IsScalarTower 𝕜 𝕜' F] [inst_11 : SeminormedAddCommGroup G] [inst_12 : NormedSpace 𝕜 G]
  [inst_13 : NormedSpace 𝕜' G] [inst_14 : IsScalarTower 𝕜 𝕜' G] (B : E →L[𝕜'] F →L[𝕜'] G),
  ContinuousLinearMap.bilinearRestrictScalars 𝕜 B =
    ContinuousLinearMap.restrictScalars 𝕜 ((ContinuousLinearMap.restrictScalarsL 𝕜' F G 𝕜 𝕜').comp B)