multiply.table

using System;

namespace ConsoleApp10
{
    class Program
    {
        static void Main(string[] args)
        {
            string number = Console.ReadLine();

            char digit1 = Convert.ToChar(number[0]);
            char digit2 = Convert.ToChar(number[1]);
            char digit3 = Convert.ToChar(number[2]);

            int mn1 = int.Parse(digit1.ToString());
            int mn2 = int.Parse(digit2.ToString());
            int mn3 = int.Parse(digit3.ToString());

            for (int i = 1; i <= mn3; i++)
            {
                for (int j = 1; j <= mn2; j++)
                {
                    for (int k = 1; k <= mn1; k++)
                    {
                        Console.WriteLine($"{i} * {j} * {k} = {i * j * k};");
                    }
                }
            }
        }
    }
}