Divisible Numbers
Easy Accuracy: 28.66% Submissions: 1300 Points: 2

Given two integers a and b. find the smallest number x (greater than a) which is divisible by b.

Input:
The first line of input contains of an integer 'T' denoting number of test cases.Then T test cases follow.Only line of each test case contains two integers a and b .

Output:
For each case print an integer x corresponding to the answer .

Constraints:
1 <= T <= 100
0 <= a,b <= 109

Example:
Input:
2
5 3
25 13

Output:
6
26

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Divisible Numbers

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