>  class mean
>   {
>        public static void main(String[] args)
>        {
>             double f=   (100.00+489.12+12454.12+1234.10+823.05+109.20+5.27+1542.25+839.18+83.99+1295.01+1.75)/12;
>             System.out.println("$"+f);
>         }
>    }