from tkinter import Y


def prod_mod(*X):
    y=1
    for x in X:
        y*=x; y%=Mod
    return y
#==================================================

import sys
input=sys.stdin.readline
write=sys.stdout.write

T=int(input())

Ans=[0]*T

Mod=10**9+7
two_inv=pow(2,Mod-2,Mod)
six_inv=pow(6,Mod-2,Mod)

for t in range(T):
    N,M=map(int,input().split())

    alpha=pow(N,M,Mod); X=prod_mod(two_inv, alpha, alpha+1)
    beta =pow(N,M//2,Mod); Y=prod_mod(six_inv, beta, beta+1, 2*beta+1)

    Ans[t]=(X-Y)%Mod

write("\n".join(map(str,Ans)))