Total Number of Cars Through an Intersection

You are given several test cases. For each test case, you are provided with two integers C and M, where C represents the number of cars entering the intersection from one direction per minute, and M represents the number of minutes. Since an intersection has 4 directions, the total number of cars that pass through the intersection in M minutes is given by the formula:

\(Total\ Cars = 4 \times C \times M\)

Your task is to compute the total number of cars for each test case.

inputFormat

The input is read from stdin and is formatted as follows:

• The first line contains an integer T — the number of test cases.
• Each of the next T lines contains two integers C and M separated by a space.

outputFormat

For each test case, output a single integer on a new line representing the total number of cars that have passed through the intersection after M minutes.

The output is written to stdout.

## sample

3
2 3
5 10
7 100

24
200
2800

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