Chef is playing a game on the non-negative x-axis. It takes him $1$ second to reach from $i^{th}$ position to $(i-1)^{th}$ position or $(i+1)^{th}$ position. The chef never goes to the negative x-axis. Also, Chef doesn't stop at any moment of time.
The movement of chef can be described as follows.
- At the start he is standing at $x=0$ at time $0$.
- In the first round, he moves towards $x=1$ and comes back to the $x=0$ position. 
- In the second round, he moves towards the $x=2$ and comes back again to $x=0$. 
- Generalizing, in the $k^{th}$ round, he moves from $x=0$ to $x=k$ and then returns back to $x=0$ at the end of the round. This goes on as the game progresses.
For Example, the path of Chef for $3^{rd}$ round is given below.
$0 - 1 - 2 - 3 - 2 - 1 - 0$ 
The overall path followed by Chef would look somewhat like this:
$0 - 1 - 0 - 1 - 2 - 1 - 0 - 1 - 2 - 3 - 2 - 1 - 0 - 1 - 2 - 3 - 4 - 3 - …$
You are given two non-negative integers $N$ and $K$. You have to tell the time at which Chef arrives at $x=N$ for the $K^{th}$ time. 
Note - Chef can not skip a position while visiting the positions.

-----Input:-----
- The first line contains $T$ the number of test cases. Then the test cases follow.
- Each test case contains a single line of two integers $N$ and $K$.

-----Output:-----
For each test case, print a single line containing one integer -- the time taken by the chef to arrive at $x=N$ for the $K^{th}$ time by modulo $1,000,000,007$.

-----Constraints-----
- $1 \le T \le 10^5$
- $0 \le N \le 10^9$
- $1 \le K \le 10^9$

-----Sample Input:-----
5
0 1
1 1
2 1
1 3
4 6

-----Sample Output:-----
0
1
4
5
46

-----Explanation:-----
Test Case 1:

Chef starts the journey from the $N = 0$ at time $t = 0$ and it's the first time $(K = 1)$, he is here. So, the answer is $0$.  
Test Case 2:

Chef starts the journey from the $N = 0$ at time $t = 0$ then goes to $N = 1$ at $t = 1$ and it's the first time $(K = 1)$, he is here. So, the answer is $1$.
Test Case 4:

The path followed by Chef to reach $1$ for the third time is given below.
$0 - 1 - 0 - 1 - 2 - 1$

He reaches $1$ for the third time at $t=5$.

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

ns = {"__name__": "__main__"}
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = '\'\'\'input\r\n6\r\n0 1\r\n1 1\r\n2 1\r\n1 3\r\n4 6\r\n4 100\r\n\'\'\'\r\nfrom bisect import bisect_left as bl, bisect_right as br\r\nfrom collections import defaultdict as dd\r\nmod=10**9+7\r\n\r\nfor _ in range(int(input())):\r\n\r\n    #n=int(input())\r\n    n,k=list(map(int,input().strip().split()))\r\n    if(k==1):\r\n        sm=pow(n,2,mod)\r\n        print(sm)\r\n        continue\r\n    elif(n==0):\r\n        sm=k*(k-1)\r\n        print(sm%mod)\r\n        continue\r\n    else:\r\n        sm=(n*(n+1))%mod\r\n\r\n\r\n    y=(k-1)/2\r\n    q=y\r\n    if(int(y)==y):\r\n        y=max(0,int(y)-1)\r\n        rem=2\r\n    else:\r\n        y=int(y)\r\n        rem=1\r\n    \r\n    sm+=(2*y*n)%mod+(y*(y+1))%mod\r\n    #print(sm,"**")\r\n\r\n    if(rem==1):\r\n        sm+=n\r\n    else:\r\n        sm+=2*(n+y+1)-n\r\n\r\n    print(sm%mod)\r\n\r\n\r\n\r\n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

```

Measured memory_bytes: 13921