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

//* ATCODER
#include<atcoder/all>
using namespace atcoder;
typedef modint998244353 mint;
//*/

/* BOOST MULTIPRECISION
#include<boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
//*/

typedef long long ll;

#define rep(i, s, n) for (int i = (int)(s); i < (int)(n); i++)
#define rrep(i, s, n) for (int i = (int)(n)-1; i >= (int)(s); i--)

template <typename T> bool chmin(T &a, const T &b) {
	if (a <= b) return false;
	a = b;
	return true;
}

template <typename T> bool chmax(T &a, const T &b) {
	if (a >= b) return false;
	a = b;
	return true;
}

template <typename T> T max(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmax(ret, a[i]);
	return ret;
}

template <typename T> T min(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmin(ret, a[i]);
	return ret;
}

template <typename T> T sum(vector<T> &a){
	T ret = 0;
	for (int i=0; i<(int)a.size(); i++) ret += a[i];
	return ret;
}

void solve(){
	ll n; cin >> n;
	string ss; cin >> ss;
	ll s = 0;
	rep(i,0,(int)ss.size()){
		if (ss[i] == '.') continue;
		s = s * 10 + (ss[i] - '0');
	}
	
	ll ans = 0;

	if (n >= 100000){
		ans += n - 99999;
		n = 99999;
	}

	rep(i,1,n+1){
		ans+=(((ll)i*(s+1)+999)/1000 - ((ll)i*s+999)/1000) > 0;
	}
	cout << ans << '\n';
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int t; cin >> t;
	while(t--) solve();
}