import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
        @SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
        // 複数行の読み込み
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        
        int mod = (int) ((c+0.5) / a);
        
        System.out.println(mod*b);
    }
}
/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