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#include <iostream>

typedef int64_t number_t;

inline bool potyczkowa(number_t x) {
    number_t y = x;
    int8_t digit;
    while (y > 0) {
        digit = y % 10;
        if (digit == 0 || x % digit != 0) {
            return false;
        }
        y /= 10;
    }
    return true;
}

int main() {
    std::ios_base::sync_with_stdio(false);

    number_t l, r;
    std::cin >> l >> r;

    number_t res = 0;
    for (number_t x = l; x < r; x++) {
        if (potyczkowa(x)) {
            res++;
        }
    }
    std::cout << res << std::endl;
    return 0;
}