#include <iostream.h>
#include <stdio.h>
#include <fstream.h>
#define LG_MAX 1000001
typedef int BigNumber[LG_MAX];
BigNumber N,nr;    
long long D,i;
char s[LG_MAX],temp;
void div (BigNumber a, long b)
{
      int 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 (BigNumber a, long b)
{
      int i,t=0;
      for (i=1;i<=a[0] || t;i++,t/=10)
              a[i]=(t+=a[i]*b)%10;
      a[0]= i-1;
}
int main()
{
    ifstream f("next.in");
    ofstream g("next.out");
    i=0;
    while (!f.eof() )
          {
          f.get(temp);  //citesc din fisier caracter cu caracter
          if ( (temp=='\r') || (temp=='\n') || (!isdigit(temp)) ) break;
          s[i]=temp;
          i++;
          }
    s[i]='\0';  //inchei sirul cu NULL
    N[0]=strlen(s); //calculez lungimea sirului
    for (i=N[0]-1;i>=0;i--)
        N[N[0]-i]=s[i]-'0';
    for (i=N[0]+1;i<LG_MAX;i++)
        N[i]=0;
   f>>D;
   f.close();
   div (N,D);
   N[1]+=1;
   mul (N,D);
   for (i=N[0];i>=1;i--)
       g<<N[i];
   g.close();
   return 0;
}