public class che1ex1{
     public static void main {
      double sum,average rage;
        sum=$1000;
     int month;
       for(month=1;month<=12;month++){
           sum=sum*rage+sum;
        System.out.println("sum="+sum);
         }
         sum=1000+sum;
         average=sum/12;
       System.out.println("average="+average);
      }
}