#include <bits/stdc++.h>
using namespace std;
char ss[8][5] = {"1869", "6198", "1896", "1689", "1986", "1968", "1698"};
string s;
int x, cnt, vis[1000010];
int main() {
  cin >> s;
  int len = s.length();
  for (register int i = 0; i < len; i++) {
    if (s[i] == '0')
      cnt++;
    else if (!vis[s[i]] and
             (s[i] == '1' or s[i] == '6' or s[i] == '8' or s[i] == '9'))
      vis[s[i]] = 1;
    else {
      x = (x << 3) + (x << 1) + (s[i] ^ 48);
      x %= 7;
      cout << s[i];
    }
  }
  if (x == 0)
    cout << 1869;
  else if (x == 1)
    cout << 6198;
  else if (x == 2)
    cout << 1896;
  else if (x == 3)
    cout << 1689;
  else if (x == 4)
    cout << 1986;
  else if (x == 5)
    cout << 1968;
  else if (x == 6)
    cout << 1698;
  for (int i = 1; i <= cnt; i++) cout << 0;
  cout << endl;
}
