//task 1
        //int firstNumber = 9;
        //int secondNumber = 10;
        
        onsole.WriteLine(firstNumber + secondNumber);
        
        //task 2
        string firstName = "Bob";
        int widgetsSold = 20;
        
        Console.WriteLine(firstName + " sold " + (widgetsSold + 7) + " widgets.");
        
        //task 3
        int quotient = 7 / 5;
        int sum = 7 + 5;
        int defrence = 7-5;
        int product = 7 * 5;
        
        Console.WriteLine(sum);
        Console.WriteLine(defrence);
        Console.WriteLine(product);
        Console.WriteLine(quotient);
        
        //task 4
        decimal decimalQuotient = 7.0m / 5;
        Console.WriteLine("decmal Quotient " + decimalQuotient);
        
        // task 5
        int first = 7;
        int second = 5;
        decimal quotient = (decimal)first / (decimal)second;
        
        Console.WriteLine(quotient);
        
        //task 6
        Console.WriteLine($"Modulus of 200 / 5 : {200 % 5}");
        Console.WriteLine($"Modulus of 7 / 5 : {7 % 5}");
        
        // task 7
        int value1 = 3 + 4 * 5;
        int value2 = (3 + 4) * 5//
        Console.WriteLine(value1);
        Console.WriteLine(value2)//
        
        //task 8
        int value = 0;     // value is now 0.
        value = value + 5; // value is now 5.
        value += 5;        // value is now 10
        Console.WriteLine(value)//
        int value2 = 0;     // value is now 0.
        value2 = value2 + 1; // value is now 1.
        value2++;           // value is now 2
        Console.WriteLine(value2);
        
        //task 9
        int value = 1;
        
        value += 1;
        onsole.WriteLine("First increment: " + value);
        
        value++;
        Console.WriteLine("Second increment: " + value);
        
        value -= 1;
        Console.WriteLine("First decrement: " + value);
        
        value--;
        Console.WriteLine("Second decrement: " + value);
        
        //task 10
        int value = 1;
        value++;
        
        Console.WriteLine("First: " + value);
        Console.WriteLine($"Second: {value++}");
        Console.WriteLine("Third: " + value);
        Console.WriteLine("Fourth: " + (++value));
        
        //task 11
        
        My ettempt
        int FH = 94;
        
        FH -= 32;
        FH *= 5/9;
        
        Console.WriteLine(FH);
        
        //Solution
        int fahrenheit = 94;
        decimal celsius = (fahrenheit - 32m) * (6m/9m);
        Console.WriteLine("The temperature is " + celsius + " Celsius.");
        
        my guess = 6;
        
        int res = 3 + 1 * 5 / 2;
        Console.Write(res);