#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
using ll = long long;
#define all(x) x.begin(), x.end()
#define rep(i, n) for (int i = 0; i < n; i++)
ll f(ll r, ll k, ll c){
    ll n = r / k;
    ll ans = 0;
    ll d = 1;
    for(int i = 0; i < 9; i++){
        ll x = c * d;
        ll y = (c + 1) * d;
        d *= 10;
        ans += floor_sum(n, d, k,  d + k - x) - floor_sum(n, d, k,  d + k - y);
    }
    return ans;
}
ll solve(){
    ll l, r, k, c;
    cin >> l >> r >> k >> c;
    return f(r, k, c) - f(l - 1, k, c);
}
int main(void)
{
    int t;
    cin >> t;
    rep(i, t){
        cout << solve() << endl;
    }
    return 0;
}