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#include <iostream>

using namespace std;

unsigned long long result;

int main()
{
    unsigned long long a, b;
    cin >> a >> b;
    for (unsigned long long i = a; i<=b; i++) {
        unsigned long long j = i;
        bool is = true;
        while(j>0) {
            if(j%10 == 0 || i%(j%10) != 0) {
                is = false;
                break;
            }
            j/=10;
        }
        if(is){
            result ++;
        }
    }

    cout << result;
    return 0;
}