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

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		long a = sc.nextLong();
		long b = sc.nextLong();
		sc.close();

		BigDecimal aa = BigDecimal.valueOf(a);
		BigDecimal bb = BigDecimal.valueOf(b);
		aa = aa.divide(bb, 50, BigDecimal.ROUND_DOWN);
		System.out.println(aa);
	}
}