import sys
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
INF = 2 ** 63 - 1
mod = 998244353
def floor_sum(N, M, a, b):
    res = 0
    while N:
        q, a = divmod(a, M)
        res += N * (N - 1) // 2 * q
        q, b = divmod(b, M)
        res += N * q
        N, b = divmod(a * N + b, M)
        a, M = M, a
    return res

 
def f(r, k, c):
    n = r // k
    ans = 0
    for i in range(1, 10):
        d = 10 ** i
        x = c * (d // 10)
        y = (c + 1) * (d // 10)
        ans += n - floor_sum(n, d, k, d + k) + floor_sum(n, d, k,  d + k - x)
        if c < 9:
            ans -= n - floor_sum(n, d, k, d + k) + floor_sum(n, d, k, d + k - y)
    return ans
    
def solve(l, r, k, c):
    if k > 10 ** 4:
        return solve_gu(l, r, k, c)
    return f(r, k, c) - f(l - 1, k, c)

def solve_gu(l, r, k, c):
    s = (l + k - 1) // k
    t = r // k
    ans = 0
    for i in range(s, t + 1):
        now = k * i
        while now > 0:
            if now % 10 == c:
                ans += 1
            now //= 10
    return ans

for _ in range(ii()):
    l, r, k, c = mi()
    print(solve(l, r, k, c))