import java.io.*;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args)
    {
        Reader r=new Reader();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int A=r.nextInt();
        int B=r.nextInt();
        int T=r.nextInt();
        int total=(int)(T+0.5)/A*B;
        System.out.println(total);
        out.println(total);



    }

    //Fast I/O class
    static class Reader
    {
        BufferedReader br;
        StringTokenizer st;

        public Reader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }


} import java.io.*; io.* java import java.util.StringTokenizer; StringTokenizer java.util public class Main {
    public static void main(String[] args)
    {
        Reader r=new Reader();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int A=r.nextInt();
        int B=r.nextInt();
        int T=r.nextInt();
        int total=(int)(T+0.5)/A*B;
        System.out.println(total);
        out.println(total);



    }

    //Fast I/O class
    static class Reader
    {
        BufferedReader br;
        StringTokenizer st;

        public Reader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }


} Main public static void main(String[] args)
    {
        Reader r=new Reader();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int A=r.nextInt();
        int B=r.nextInt();
        int T=r.nextInt();
        int total=(int)(T+0.5)/A*B;
        System.out.println(total);
        out.println(total);



    } main {
        Reader r=new Reader();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int A=r.nextInt();
        int B=r.nextInt();
        int T=r.nextInt();
        int total=(int)(T+0.5)/A*B;
        System.out.println(total);
        out.println(total);



    } Reader r=new Reader(); r new Reader() PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out)); out new PrintWriter(new BufferedOutputStream(System.out)) int A=r.nextInt(); A r.nextInt() r.nextInt r int B=r.nextInt(); B r.nextInt() r.nextInt r int T=r.nextInt(); T r.nextInt() r.nextInt r int total=(int)(T+0.5)/A*B; total (int)(T+0.5)/A*B (int)(T+0.5)/A (int)(T+0.5) T 0.5 A B System.out.println(total) System.out.println System.out System System.out total out.println(total) out.println out total String[] args args static class Reader
    {
        BufferedReader br;
        StringTokenizer st;

        public Reader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    } Reader BufferedReader br; br StringTokenizer st; st public Reader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        } Reader {
            br = new BufferedReader(new InputStreamReader(System.in));
        } br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } next {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } IOException e {
                    e.printStackTrace();
                } e.printStackTrace() e.printStackTrace e {
                    st = new StringTokenizer(br.readLine());
                } st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st int nextInt() {
            return Integer.parseInt(next());
        } nextInt {
            return Integer.parseInt(next());
        } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next long nextLong() {
            return Long.parseLong(next());
        } nextLong {
            return Long.parseLong(next());
        } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next double nextDouble() {
            return Double.parseDouble(next());
        } nextDouble {
            return Double.parseDouble(next());
        } return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        } nextLine {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        } String str = ""; str "" try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } IOException e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                str = br.readLine();
            } str = br.readLine() str br.readLine() br.readLine br return str; str public class Main {
    public static void main(String[] args)
    {
        Reader r=new Reader();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int A=r.nextInt();
        int B=r.nextInt();
        int T=r.nextInt();
        int total=(int)(T+0.5)/A*B;
        System.out.println(total);
        out.println(total);



    }

    //Fast I/O class
    static class Reader
    {
        BufferedReader br;
        StringTokenizer st;

        public Reader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }


} public class Main {
    public static void main(String[] args)
    {
        Reader r=new Reader();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int A=r.nextInt();
        int B=r.nextInt();
        int T=r.nextInt();
        int total=(int)(T+0.5)/A*B;
        System.out.println(total);
        out.println(total);



    }

    //Fast I/O class
    static class Reader
    {
        BufferedReader br;
        StringTokenizer st;

        public Reader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }


} Main
import java.io.*;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args)
    {
        Reader r=new Reader();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int A=r.nextInt();
        int B=r.nextInt();
        int T=r.nextInt();
        int total=(int)(T+0.5)/A*B;
        System.out.println(total);
        out.println(total);



    }

    //Fast I/O class
    static class Reader
    {
        BufferedReader br;
        StringTokenizer st;

        public Reader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }


}
