import java.util.Scanner;
import java.util.List;
import java.util.ArrayList;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
String a = sc.next();
int b = sc.nextInt();
List<Integer> res = mut(a,b);
for(int i =res.size()-1;i>=0;i--){
System.out.print(res.get(i));
}
}
public static List mut(String a,int b){
List<Integer> result = new ArrayList();
int i = a.length()-1;
int t = 0,m=0;
for(;i>=0;i--){
m = ((a.charAt(i)-'0')*b+t)%10;
t = ((a.charAt(i)-'0')*b+t)/10;
result.add(m);
}
if(t>0){
result.add(t);
}
while(result.size() > 1 && result.get(result.size()-1) ==0 ){
result.remove(result.size()-1);
}
return result;
}
}