package TextProcessing_exs;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner s = new Scanner(System.in);

        String input = s.nextLine();
        int multiplier = Integer.parseInt(s.nextLine());
        int addNum = 0;
        for (int i = 0; i < input.length(); i++) {
            char ch = input.charAt(i);
            if (ch != '0') {
                int index = i;
                input = input.substring(index);
                break;
            }
        }
        if (multiplier == 0) {
            System.out.println(0);
            return;
        }

        StringBuilder exitNum = new StringBuilder();

        char[] inputNum = input.toCharArray();

        for (int i = inputNum.length - 1; i >= 0; i--) {
            int currentNum = ((inputNum[i] - '0') * multiplier) + addNum;
            addNum = currentNum / 10;
            currentNum %= 10;
            exitNum.append(currentNum);
        }
        if (addNum > 0) {
            exitNum.append(addNum);
        }
        exitNum.reverse();
        System.out.println(exitNum);
    }
}