import java.util.Scanner;

class Main {
	public static void main(String[] args) {
        Scanner stdIn = new Scanner(System.in);
        int total = 0;
        int A = stdIn.nextInt();
        int B = stdIn.nextInt();
        int T = stdIn.nextInt();
        for(int i=1;;i++) {
        	if((T-i*A)>=0)
        		total += B;
        	else
        		break;
        } 
        System.out.println(total);
	}
} import java.util.Scanner; Scanner java.util class Main {
	public static void main(String[] args) {
        Scanner stdIn = new Scanner(System.in);
        int total = 0;
        int A = stdIn.nextInt();
        int B = stdIn.nextInt();
        int T = stdIn.nextInt();
        for(int i=1;;i++) {
        	if((T-i*A)>=0)
        		total += B;
        	else
        		break;
        } 
        System.out.println(total);
	}
} Main public static void main(String[] args) {
        Scanner stdIn = new Scanner(System.in);
        int total = 0;
        int A = stdIn.nextInt();
        int B = stdIn.nextInt();
        int T = stdIn.nextInt();
        for(int i=1;;i++) {
        	if((T-i*A)>=0)
        		total += B;
        	else
        		break;
        } 
        System.out.println(total);
	} main {
        Scanner stdIn = new Scanner(System.in);
        int total = 0;
        int A = stdIn.nextInt();
        int B = stdIn.nextInt();
        int T = stdIn.nextInt();
        for(int i=1;;i++) {
        	if((T-i*A)>=0)
        		total += B;
        	else
        		break;
        } 
        System.out.println(total);
	} Scanner stdIn = new Scanner(System.in); stdIn new Scanner(System.in) int total = 0; total 0 int A = stdIn.nextInt(); A stdIn.nextInt() stdIn.nextInt stdIn int B = stdIn.nextInt(); B stdIn.nextInt() stdIn.nextInt stdIn int T = stdIn.nextInt(); T stdIn.nextInt() stdIn.nextInt stdIn for(int i=1;;i++) {
        	if((T-i*A)>=0)
        		total += B;
        	else
        		break;
        } int i=1; int i=1; i 1 i++ i++ i {
        	if((T-i*A)>=0)
        		total += B;
        	else
        		break;
        } {
        	if((T-i*A)>=0)
        		total += B;
        	else
        		break;
        } if((T-i*A)>=0)
        		total += B;
        	else
        		break; (T-i*A)>=0 (T-i*A) T i*A i A 0 total += B total B break; System.out.println(total) System.out.println System.out System System.out total String[] args args
import java.util.Scanner;

class Main {
	public static void main(String[] args) {
        Scanner stdIn = new Scanner(System.in);
        int total = 0;
        int A = stdIn.nextInt();
        int B = stdIn.nextInt();
        int T = stdIn.nextInt();
        for(int i=1;;i++) {
        	if((T-i*A)>=0)
        		total += B;
        	else
        		break;
        } 
        System.out.println(total);
	}
}