#include <fstream>

using namespace std;
ifstream f("next.in");
ofstream g("next.out");
int v[1000005],i,a[18],rez[10000100];
long long x,nr,t;
int main()
{
    char c;
    f.get(c);
    while (c!='\n')
    {
        v[++v[0]]=c-'0';
        f.get(c);
    }
    f>>x;
    for (i=1;i<=v[0]/2;i++)
    {
        swap(v[i],v[v[0]-i+1]);
    }
    for (i=v[0];i>=1;i--)
    {
        v[i]=(nr=nr*10+v[i])/x;
        nr=nr%x;
    }
    while (v[v[0]]==0&&v[0]>1)
    {
        v[0]--;
    }
    v[1]++;
    t=0;
    i=1;
    while (v[i]>9&&i<=v[0])
    {
        int k=v[i];
        v[i]=(v[i]+t)%10;
        t=(k+t)/10;
    }
    v[0]+=t;
    v[v[0]]+=t;
    t=0;
    for (i=1;i<=v[0];i++)
    {
        v[i]=v[i]*x+t;
        t=v[i]/10;
        v[i]=v[i]%10;
    }
    while (t>0)
    {
        v[++v[0]]=t%10;
        t=t/10;
    }
    for (i=v[0];i>=1;i--)
    {
        g<<v[i];
    }
    return 0;
}