Repeated String

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

class Result {

    /*
     * Complete the 'repeatedString' function below.
     *
     * The function is expected to return a LONG_INTEGER.
     * The function accepts following parameters:
     *  1. STRING s
     *  2. LONG_INTEGER n
     */

    public static long repeatedString(String s, long n) {
    // Write your code here
     
    long len=s.length();
    
    long div=n/len;
    long re=n%len;
    
    int rem=(int)re;
    
   char ch='a';
   long count=0;
    for(int i=0; i<len; i++)
    {
        if(ch==s.charAt(i))
          count++;
    }
    
    count=count*div;
  
   
   if(rem !=0)
   {
     String temp=s.substring(0,rem);
     for(int i=0; i<temp.length(); i++)
       {
           if(ch==temp.charAt(i))
            count++;
       } 
   }  
     
     
     return count;

}
}

public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        String s = bufferedReader.readLine();

        long n = Long.parseLong(bufferedReader.readLine().trim());

        long result = Result.repeatedString(s, n);

        bufferedWriter.write(String.valueOf(result));
        bufferedWriter.newLine();

        bufferedReader.close();
        bufferedWriter.close();
    }
}