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#include <cstdio>

int main(){
    long long l, r, counter =0;
    scanf(" %lld %lld ",&l,&r);
    for(long long i=l; i<=r; i++){
        long long buf = i;
        bool potyczkov = true;
        if(( i%10LL == 0)||(i%( i%10LL )!=0))
            potyczkov = false;
        while(buf>=10LL){
            buf/=10LL;
            if((buf %10LL == 0)||( i % (buf %10LL ) != 0)){
                potyczkov = false;
                break;
            }
        }
        if (potyczkov) {
            //printf("%I64d\n",i);
            counter++;
        }
    }
    printf("%lld\n",counter);
    return 0;
}