This program will not compile without the .ToString(), however ReSharper claims the .ToString() is redundant

using System;

namespace ConsoleApplication2 {
  public class Program {
    static void Main() {
      Console.WriteLine(new A().ToString(), 77.2); //R# claims Redundant 'Object.ToString()' call
    }

    private class A {
      public override string ToString() {
        return "{0:n5}";
      }
    }
  }
}

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