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);
		String a = sc.next();
		String b = sc.next();
		sc.close();

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