Kabir Singh is playing a game on the non-negative side of  x-axis. It takes him $1 second$ to reach from Pth position to (P−1)th position or (P+1)th position. 
Kabir never goes to the negative side and also doesn't stop at any moment of time.
The movement can be defined as  : 
- At the beginning he is at $x=0$ , at time $0$
- During 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 $x=0$.
- So , at $Kth$ round , he moves to $x=K$ and comes back to $x=0$
So in this way game goes ahead.
For Example, the path of Kabir for $3rd$ round is given below.
$0−1−2−3−2−1−0$
The overall path followed by Kabir would look somewhat like this:
$0−1−0−1−2−1−0−1−2−3−2−1−0−1−2−3−4−3−…$
Now the task is , You are given Two Non-Negative integers $N$ , $K$ .
You have to tell the time at which Kabir arrives at $x=N$ for the $Kth$ time.
Note - Kabir visits all the points , he can not skip or jump over one point.

-----Input:-----
- First line will contain $T$, number of testcases. Then the testcases follow. 
- Each testcase contains of a single line of input, two integers $N, K$. 

-----Output:-----
For each testcase, output in a single line answer i.e Time Taken by Kabir Singh modulo 1000000007.

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

-----Sample Input:-----
4

0 1
1 1
1 3
4 6

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

-----EXPLANATION:-----
Test Case 1:
Kabir 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 3:
The path followed by Kabir 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 = 'import math\r\nt = int(input())\r\nwhile t > 0:\r\n\tk = input()\r\n\tif len(k) == 0: continue;\r\n\r\n\tn, k = k.split()\r\n\tn = int(n)\r\n\tk = int(k)\r\n\r\n\t\r\n\tif n == 0 and  k == 1 : \r\n\t\tprint("0")\r\n\t\tt-=1\r\n\t\tcontinue\r\n\telif n == 0:\r\n\t\tprint((k*(k-1))%1000000007)\r\n\t\tt-=1\r\n\t\tcontinue\r\n\t\r\n\tlevel = n + math.ceil((k + 1)/2)\r\n\ttime = (level - 1)*(level - 2)\r\n\r\n\tif k%2 == 0 : time = time + n;\r\n\telse : time = time + 2*(level-1) - n;\r\n\tprint(time%1000000007)\r\n\tt-=1'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

```

Measured memory_bytes: 13221