import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes")
no = lambda :print("no");No = lambda :print("No")
#######################################################################
for _ in range(ni()):
    N,m = input().split()
    m = int(m)
    n = 0
    for i in N:
        n = int(i) + n*10
        n %= m*2

    x = n * (n+1) // 2
    print(x%m)