Janmansh received X coins of 10 rupees and Y coins of 5 rupees from Chingari. Since he is weak in math, can you find out how much total money does he have?

------ Input Format ------

• The first line will contain T - the number of test cases. Then the test cases follow.
• The first and only line of each test case contains two integers X, Y - the number of 10 and 5 rupee coins respectively.

------ Output Format ------

For each test case, output how much total money does Janmansh have.

------ Constraints ------

$1 ≤T ≤100$
$0 ≤X, Y ≤100$

----- Sample Input 1 ------
2
2 1
3 4

----- Sample Output 1 ------
25
50

----- explanation 1 ------
Test case-1: He has $2$ coins of $10$ rupees and $1$ coin of $5$ rupees. Hence he has $2 \cdot 10+5 = 25$ rupees.

Test case-2: He has $3$ coins of $10$ rupees and $4$ coins of $5$ rupees. Hence he has $3 \cdot 10 + 4 \cdot 5 = 50$ rupees.

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