The purpose of requiring a landlord, by the terms of RPAPL 711 (2), to demand rent of a tenant prior to initiating a *546summary nonpayment proceeding in the Civil Court is not only to inform the tenant that in the absence of payment of the demanded amount or surrender of the premises, legal proceedings will be instituted, but also to allow the tenant to remedy any default in payment, thus avoiding litigation and possible eviction. (Zenila Realty Corp. v Masterandrea, 123 Misc 2d 1 [Civ Ct, NY County 1984]; Zinsser v Herrman, 23 Misc 645 [App Term 1898]; Life Realty Partners v Samuel H. Moss, Inc., NYLJ, Oct. 16, 1991, at 22, col 4 [Civ Ct, NY County].) To achieve these purposes, the three-day notice must inform the tenant of the "approximate good faith sum” of rent claimed. (Zenila Realty Corp. v Masterandrea, supra, at 8; Schwartz v Weiss-Newell, 87 Misc 2d 558 [Civ Ct, NY County 1976].)