#include <bits/stdc++.h>
using namespace std;
using ll = long long;

string N;
ll M;
void solve(){
    cin >> N >> M;
    reverse(N.begin(), N.end());
    ll p10 = 1;
    ll n = 0;
    for(char c : N){
        n = (n + (c - '0') * p10) % (2 * M);
        p10 = p10 * 10 % (2 * M);
    }
    ll ans = n * (n + 1) / 2 % M;
    cout << ans << endl;
}
int main(void){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    
    int t; cin >> t;
    while(t--)solve();
    return 0;
}