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#include <bits/stdc++.h>
using namespace std;

bool check(int64_t num) {
    int64_t temp = num;
    while(temp) {
        int dig = temp % 10;
        temp /= 10;
        if(dig == 0) return false;
        if(num % dig) return false;
    }
    return true;
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);

    int64_t l, r;
    cin >> l >> r;
    int sum = 0;
    for(int64_t i = l; i <= r; i++) {
        if(check(i)) {
            //cerr << i << "\n";
            sum++;
        }
    }
    cout << sum;

    return 0;
}