#define _USE_MATH_DEFINES
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <queue>
#include <math.h>
#include <cmath>
#include <stack>
#include <map>
#include <set>
#include <numeric>
#include <iomanip>
#include <climits>
#include <functional>
#include <cassert>
#include <tuple>
using namespace std;
using ll = long long;

int T;

//ループの回数は適宜修正
ll power(ll a, ll b, ll m) {
    ll p = a, ans = 1;
    for(int i = 0; i < 60; i++) {
        ll wari = (1LL << i);
        if((b / wari) % 2 == 1) {
            ans = (ans * p) % m;
        }
        p = (p * p) % m;
    }
    return ans;
}

int main() {

    cin >> T;
    vector<ll> ansv;
    while(T--) {
        string N;
        ll M;
        ll ans = 0;
        cin >> N >> M;
        ll now = 0;
        for(int i = 0; i < (int)N.size(); ++i) {
            ll n = ll(N[i]-'0');
            now = now*10+n;
            now %= 2*M;
        }

        ans = now*(now+1);
        ans %= 2*M;
        ansv.push_back(ans/2);
    }

    for(int ans : ansv) cout << ans << endl;

}