import java.util.*;

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

        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        int T = sc.nextInt();

        int bic = 0;
        double t = (T+0.5)/A;
        for(int i=1;i<=t;i++){
               bic +=B;
        }
        System.out.println(bic);
    }
}
/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