import sys
input = lambda: sys.stdin.readline().rstrip()
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):
    ans=0
    if a>=m:
        ans+=(n-1)*n*(a//m)//2
        a%=m
    if b>=m:
        ans+=n*(b//m)
        b%=m
    y_max=(a*n+b)//m
    x_max=(y_max*m-b)
    if y_max==0:
        return ans
    ans+=(n-(x_max+a-1)//a)*y_max
    ans+=floor_sum(y_max,a,m,(a-x_max%a)%a)
    return ans

 

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):
    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))