import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		BigDecimal A = sc.nextBigDecimal(), B = sc.nextBigDecimal();
		sc.close();
		System.out.print(A.divide(B, 50, RoundingMode.DOWN));
	}
}