#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n); i >= 0; i--)
#define all(v) v.begin(), v.end()
#define mod1 1000000007
#define mod2 998244353
typedef long long ll;

ll my_pow(ll x, ll n, ll mod){
    //　繰り返し二乗法．x^nをmodで割った余り．
    ll ret;
    if (n == 0){
        ret = 1;
    }
    else if (n % 2 == 1){
        ret = (x * my_pow((x * x) % mod, n / 2, mod)) % mod;
    }
    else{
        ret = my_pow((x * x) % mod, n / 2, mod);
    }
    return ret;
}

int main(){
    ll T;
    cin >> T;
    for (ll z = 0; z < T; z++){
        ll N, M;
        cin >> N >> M;
        ll x = my_pow(N, M, mod1);
        ll y = my_pow(N, M / 2, mod1);
        ll s1 = (x * (x + 1)) % mod1;
        s1 = (s1 * my_pow(2LL, mod1 - 2, mod1)) % mod1;

        ll s2 = (y * (y + 1)) % mod1;
        s2 = (s2 * (2 * y + 1)) % mod1;
        s2 = (s2 * my_pow(6LL, mod1 - 2, mod1)) % mod1;
        cout << (s1 - s2 + mod1) % mod1 << endl;
    }
}