code:
#include<stdio.h>
int main()
{int i,j,a,b,c[1001],find,A;
while(1)
{
	scanf("%d%d",&a,&b);
	if (a==0&&b==0) break;
	i=1;find=0;
   c[1]=a;  printf(".");
   while(c[i]!=0&&i<=b)
  {
    A=c[i]*10/b;
    c[i+1]=c[i]*10%b;
    printf("%d",A);
	if((i+1)%50==0) printf("\n");
    for(j=1;j<=i;j++)
    {
     if(c[j]==c[i+1])
     {find=1;break;}
    }
    if(find==1) break;
    i++;
  }
 if(find)  printf("\nThe last %d digits repeat forever.\n",(i+1-j));
  else      printf("\nThis expansion terminates.\n");
  }
  return 0;
}