import java.io.*;
import java.util.*;
import java.lang.*;
 
public class Main {
	
	public static void main(String[] args) {
      Scanner scan = new Scanner(System.in);
      int A =  scan.nextInt();
      int B =  scan.nextInt();
      int T =  scan.nextInt();
      int i = 0, count = 0;;
      while (i+A <= (T+0.5))
      {
        count++;
         i += A;
      }
      System.out.println(B*count);
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz