minnum,maxnum = (n for n in input().split(" ")) minnum = str(int(minnum)) maxnum = str(int(maxnum) + 1) min_len = len(minnum) max_len = len(maxnum) modu = 10 ** 9 + 7 maxdp = [[[[[0 for n in range(8)] for m in range(3)] for k in range(2)] for l in range(2)] for o in range(max_len + 1)] mindp = [[[[[0 for n in range(8)] for m in range(3)] for k in range(2)] for l in range(2)] for o in range(min_len + 1)] maxdp[0][0][0][0][0] = 1 mindp[0][0][0][0][0] = 1 for l in range(max_len): for over_flag in range(2): for is_three in range(2): for three_mod in range(3): for eight_mod in range(8): limit = 9 if over_flag else int(maxnum[l]) for lim in range(limit + 1): maxdp[l + 1][over_flag or lim < limit][is_three or lim == 3][(three_mod * 10 + lim) % 3][(eight_mod * 10 + lim) % 8] += (maxdp[l][over_flag][is_three][three_mod][eight_mod]) % modu for l in range(min_len): for over_flag in range(2): for is_three in range(2): for three_mod in range(3): for eight_mod in range(8): limit = 9 if over_flag else int(minnum[l]) for lim in range(limit + 1): mindp[l + 1][over_flag or lim < limit][is_three or lim == 3][(three_mod * 10 + lim) % 3][(eight_mod * 10 + lim) % 8] += (mindp[l][over_flag][is_three][three_mod][eight_mod]) % modu max_number = 0 min_number = 0 for over_flag in range(2): for is_three in range(2): for three_mod in range(3): for eight_mod in range(1,8): if over_flag and (is_three or three_mod == 0): min_number = (min_number + mindp[min_len][over_flag][is_three][three_mod][eight_mod]) % modu for over_flag in range(2): for is_three in range(2): for three_mod in range(3): for eight_mod in range(1,8): if over_flag and (is_three or three_mod == 0): max_number = (max_number + maxdp[max_len][over_flag][is_three][three_mod][eight_mod]) % modu # print(maxdp , mindp) # print(max_number , min_number) print((max_number - min_number) % modu)