public static void PrintPrettyResult(CalculationInt calc)
        {
            Dictionary <int, int> data = new Dictionary <int, int>()
            {
                { 2, 3 },
                { 4, 5 },
                { 6, 7 },
                { 10, 11 },
                { 7, 3 }
            };

            foreach (int key in data.Keys)
            {
                int x = key;
                int y = data[key];
                int r = calc(x, y);

                Console.WriteLine($"{key} ,{data[key]} = {r}");
            }
        }