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C. K-th Not Divisible by n

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputYou are given two positive integers $$$n$$$ and $$$k$$$. Print the $$$k$$$-th positive integer that is not divisible by $$$n$$$.

For example, if $$$n=3$$$, and $$$k=7$$$, then all numbers that are not divisible by $$$3$$$ are: $$$1, 2, 4, 5, 7, 8, 10, 11, 13 \dots$$$. The $$$7$$$-th number among them is $$$10$$$.

Input

The first line contains an integer $$$t$$$ ($$$1 \le t \le 1000$$$) — the number of test cases in the input. Next, $$$t$$$ test cases are given, one per line.

Each test case is two positive integers $$$n$$$ ($$$2 \le n \le 10^9$$$) and $$$k$$$ ($$$1 \le k \le 10^9$$$).

Output

For each test case print the $$$k$$$-th positive integer that is not divisible by $$$n$$$.

Example

Input

6 3 7 4 12 2 1000000000 7 97 1000000000 1000000000 2 1

Output

10 15 1999999999 113 1000000001 1

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