#include <bits/stdc++.h>
using namespace std;
long long ans[1000005], anss[1000005][10];
int make(int n) {
  long long g = 1;
  if (n % 10 != 0) g = g * (n % 10);
  n = n / 10;
  while (n > 0) {
    if (n % 10 != 0) g = g * (n % 10);
    n = n / 10;
  }
  return g;
}
long long bit[1000005][11];
void update(int idx, int val) {
  while (idx <= 1000000) {
    bit[idx][val]++;
    idx += idx & (-idx);
  }
}
long long query(int idx, int val) {
  long long sum = 0;
  while (idx > 0) {
    sum += bit[idx][val];
    idx -= idx & (-idx);
  }
  return sum;
}
int main() {
  long long int i;
  ans[1] = 1;
  ans[0] = 0;
  for (i = 2; i <= 9; i++) {
    ans[i] = i;
  }
  int k;
  for (int i = 10; i <= 1000000; i++) {
    k = i;
    while (make(k) >= 10) {
      k = make(k);
    }
    k = make(k);
    ans[i] = k;
  }
  for (i = 1; i <= 1000000; i++) {
    update(i, ans[i]);
  }
  int q;
  cin >> q;
  while (q--) {
    int l, r, k;
    cin >> l >> r >> k;
    cout << query(r, k) - query(l - 1, k) << endl;
  }
}
