import sys

sys.setrecursionlimit(10**7)
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int,sys.stdin.readline().rstrip().split())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LI2(): return list(map(int,sys.stdin.readline().rstrip()))
def S(): return sys.stdin.readline().rstrip()
def LS(): return list(sys.stdin.readline().rstrip().split())
def LS2(): return list(sys.stdin.readline().rstrip())


T = S()
D = I()
mod = 10**9+7

s = 0
q = 0
for t in T:
    if t.isdigit():
        s += int(t)
    else:
        q += 1

if D == 0:
    if s == 0:
        print(1)
    else:
        print(0)
    exit()

ans = (pow(10,q,mod)-1)*pow(9,mod-2,mod)
ans %= mod

if s == 0:
    print(ans)
elif (D-s) % 9 == 0:
    print((ans+1) % mod)
else:
    print(ans)