Find the Smallest Multiple

You are given T test cases. In each test case, you are given two positive integers A and B. Your task is to find the smallest integer X such that X \geq A and X is divisible by B.

You can compute X using the formula:

$X = \lceil \frac{A}{B} \rceil \times B$

where \(\lceil \cdot \rceil\) denotes the ceiling function.

This problem tests your ability to work with basic arithmetic operations and conditional statements.

inputFormat

The first line contains a single integer T, representing the number of test cases.

Each of the next T lines contains two space-separated integers, A and B.

outputFormat

For each test case, output the smallest integer that is greater than or equal to A and divisible by B. Each result should be printed on a new line.

## sample

5
10 3
5 7
12 6
100 25
7 10

12
7
12
100
10

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