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#include <cstdio>
#define lld long long int

bool check(lld x) {
    int temp = x;
    while(temp > 0) {
        if(temp % 10 == 0)  return false;
        if(x % (temp % 10) != 0) {
            return false;
        }
        temp /= 10;
    }
    return true;
}

int main() {
    lld l, r, out = 0;
    scanf("%lld%lld", &l, &r);
    for(lld i = l; i <= r; i++)
        if(check(i))
            out++; 
    printf("%lld", out);
}