import java.math.BigDecimal;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

class Main { 
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] ary = br.readLine().split(" ");
        
        BigDecimal a = new BigDecimal(ary[0]);
		BigDecimal b = new BigDecimal(ary[1]);
		System.out.println(a.divide(b, 50, BigDecimal.ROUND_DOWN).toPlainString());
        
    }
}