#include<stdio.h>
#include<string.h>
#include<algorithm>
#include<math.h>

using namespace std;

typedef long long ll;

ll r;

void gcd(ll a, ll b, ll &x, ll &y)
{
    if(b == 0)
    {
        x = 1;
        y = 0;
        r = a;
        return ;
    }
    gcd(b, a % b, x, y);
    ll t;
    t = x;
    x = y;
    y = t - a / b * y;
}

int main()
{
    int t;
    ll n, B, a, b, c, x, y;
    scanf("%d", &t);
    while(t--)
    {
        scanf("%lld %lld", &n, &B);
        a = B;
        b = 9973;
        c = n;
        gcd(a, b, x, y);
        ll s = b / r;
        x = c / r * x;
        x = (x % s + s) % s;
        printf("%lld\n", x);
    }
    return 0;
}