#include<cstdio>

int a[1000000];

void div(int A[], unsigned long B)  
{  
       long  i, t = 0;  
         for (i = A[0]; i > 0; i--, t %= B)  
                  A[i] = (t = t * 10 + A[i]) / B;  
          for (; A[0] > 1 && !A[A[0]]; A[0]--);  
   }  
void mul(int c[], long long d)  
{  
  int i, t = 0;  
  for (i = 1; i <= c[0] || t; i++, t /= 10)  
    c[i] = (t += c[i] * d) % 10;  
  c[0] = i - 1;  
} 
int main()
{    
  freopen("next.in","r",stdin);
  freopen("next.out","w",stdout);
  char ch;
  int x[1000000];
  x[0]=0;
  while(1)
  {
     ch=fgetc(stdin);
     if(ch>'9'||ch<'0') break;
     x[++x[0]]=ch-'0';
  }
  int i;
  a[0]=x[0];
  for(i=1;i<=x[0];i++)
    a[i]=x[x[0]+1-i];
  long long d;
  scanf("%lld",&d);
  
  div(a,d);
  
  i=1;
  while(a[i]==9) 
    a[i++]=0;
  a[i]++;
  if(i>a[0]) a[0]=i;
  mul(a,d);
  for(i=a[0];i>=1;i--) printf("%d",a[i]);
  return 0;
}