Mutated Minions

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Gru has not been in the limelight for a long time and is, therefore, planning something particularly nefarious. Frustrated by his minions' incapability which has kept him away from the limelight, he has built a transmogrifier — a machine which mutates minions.
Each minion has an intrinsic characteristic value (similar to our DNA), which is an integer. The transmogrifier adds an integer K to each of the minions' characteristic value.
Gru knows that if the new characteristic value of a minion is divisible by 7, then it will have Wolverinelike mutations.
Given the initial characteristic integers of N minions, all of which are then transmogrified, find out how many of them become Wolverinelike.
Input Format:
The first line contains one integer, T, which is the number of test cases. Each test case is then described in two lines.
The first line contains two integers N and K, as described in the statement.
The next line contains N integers, which denote the initial characteristic values for the minions.
Output Format:
For each testcase, output one integer in a new line, which is the number of Wolverinelike minions after the transmogrification.
Constraints:
 1 ≤ T ≤ 100
 1 ≤ N ≤ 100
 1 ≤ K ≤ 100
 All initial characteristic values lie between 1 and 10^{5}, both inclusive.
Example
Input: 1 5 10 2 4 1 35 1 Output: 1
Explanation:
After transmogrification, the characteristic values become {12,14,11,45,11}, out of which only 14 is divisible by 7. So only the second minion becomes Wolverinelike.Author:  arjunarul 
Editorial  http://discuss.codechef.com/problems/CHN15A 
Tags  acmchn15, arjunarul, cakewalk, modulo 
Date Added:  26102015 
Time Limit:  1 sec 
Source Limit:  50000 Bytes 
Languages:  C, CPP14, JAVA, PYTH, PYTH 3.6, PYPY, CS2, PAS fpc, PAS gpc, RUBY, PHP, GO, NODEJS, HASK, rust, SCALA, swift, D, PERL, FORT, WSPC, ADA, CAML, ICK, BF, ASM, CLPS, PRLG, ICON, SCM qobi, PIKE, ST, NICE, LUA, BASH, NEM, LISP sbcl, LISP clisp, SCM guile, JS, ERL, TCL, kotlin, PERL6, TEXT, SCM chicken, CLOJ, COB, FS 
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