using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var partida = "3528952".PadLeft(7, '0');

        var total = partida.Select(t => int.Parse(t.ToString())).Select((digit, index) => digit * (index == 0 ? 7 : index + 1)).Sum();

        var modulo = total % 11;

        Console.WriteLine($"Digito: {modulo:00}");

    }

}