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

#define ll long long

bool czyPotyczkowa(ll a)
{
    ll temp = a;
    while(temp != 0)
    {
        int last = temp % 10;
        temp /= 10;
        if(last != 0)
            if(a % last != 0)
                return false;
        if(last == 0)
            return false;
    }
    return true;
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll l, r;
    cin >> l >> r;
    ll ans = 0;

    for(int i = l; i <= r; i++)
        if(czyPotyczkowa(i))
            ans++;

    cout << ans << "\n";
}