import java.util.Scanner;

class Main{
  public static void main(String[] args){
    Scanner scanner = new Scanner(System.in);
    int A = scanner.nextInt();
    int B = scanner.nextInt();
    int T = scanner.nextInt();
    
    
    int sumA = A;
    int sumB = 0;
    
    while(sumA <= T){
    
      sumA += A;
      sumB += B;
    }
    
    System.out.println(sumB);
    
  }
}

/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