public class Test3_5{
    public static void main(String args[ ]) {
      int m=8,item=m,i=1;
      long sum=0;
      for(i=1,sum=0,item=m;i<=10;i++){
        sum=sum+item;
        item=item*10+m;
      }
      System.out.println(sum);
    }
  }