for _ in range(int(input())):
    n, m = input().split()
    m = int(m)
    l = len(n)
    N = []
    Pow10 = [1]
    for i in range(l):
        N.append(int(n[i]))
        Pow10.append(Pow10[-1] * 10 % m)
    L = []
    res = 0
    r = 0
    for i in range(l):
        res = r * 10 + N[i]
        q, r = divmod(res, 2)
        L.append(q)
    if N[-1] % 2 == 0:
        N[-1] += 1
    else:
        L[-1] += 1
    a, b = 0, 0
    for i in range(l):
        a += N[i] * Pow10[l - i - 1] % m
        a %= m
        b += L[i] * Pow10[l - i - 1] % m
        b %= m
    ans = a * b % m
    print(ans)