import java.util.*;

 
class Main {
 
    private static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        double t =sc.nextDouble();
        double nowTime = a;
        while(nowTime < t + 0.5){
            ans += b;
            nowTime += a;
        }
        System.out.println(ans);
    }

} import java.util.*; util.* java class Main {
 
    private static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        double t =sc.nextDouble();
        double nowTime = a;
        while(nowTime < t + 0.5){
            ans += b;
            nowTime += a;
        }
        System.out.println(ans);
    }

} Main private static Scanner sc = new Scanner(System.in); sc new Scanner(System.in) public static void main(String[] args) {
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        double t =sc.nextDouble();
        double nowTime = a;
        while(nowTime < t + 0.5){
            ans += b;
            nowTime += a;
        }
        System.out.println(ans);
    } main {
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        double t =sc.nextDouble();
        double nowTime = a;
        while(nowTime < t + 0.5){
            ans += b;
            nowTime += a;
        }
        System.out.println(ans);
    } int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int ans = 0; ans 0 double t =sc.nextDouble(); t sc.nextDouble() sc.nextDouble sc double nowTime = a; nowTime a while(nowTime < t + 0.5){
            ans += b;
            nowTime += a;
        } nowTime < t + 0.5 nowTime t + 0.5 t 0.5 {
            ans += b;
            nowTime += a;
        } ans += b ans b nowTime += a nowTime a System.out.println(ans) System.out.println System.out System System.out ans String[] args args
import java.util.*;

 
class Main {
 
    private static Scanner sc = new Scanner(System.in);
 
    public static void main(String[] args) {
        int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
        double t =sc.nextDouble();
        double nowTime = a;
        while(nowTime < t + 0.5){
            ans += b;
            nowTime += a;
        }
        System.out.println(ans);
    }

}
