import java.util.*;
import java.io.*;

public class another 
{
	public static void main(String[] argh) throws Exception
	{
		Scanner in = new Scanner(new File("another.in"));
		
		int people;
		int rounds;
		int help;
		int[] tickets;
		int maxTicketsInRound;
		
		people = in.nextInt();
		rounds = in.nextInt();
		while(people != 0 && rounds != 0)
		{
			tickets = new int[people];
			maxTicketsInRound = 0;
		
			for(int i = 0; i < people; i++)
			{
				for(int j = 0; j < rounds - 1; j++)
				{
					in.nextInt();
				}
				help = in.nextInt();
				tickets[i] = help;
				maxTicketsInRound += help;
			}
			
			for(int i = 0; i < people; i++)
			{
				printFraction(tickets[i], maxTicketsInRound);
			}
			
			people = in.nextInt();
			rounds = in.nextInt();
		}
		in.close();
		System.exit(0);
	}
	
	public static void printFraction(int tickets, int maxTickets)
	{
		int ggt = ggt(tickets, maxTickets);
		if(ggt != 0)
		{
			tickets /= ggt;
			maxTickets /= ggt;
		}
		else
		{
			tickets = 0;
			maxTickets = 1;
		}
		System.out.println(tickets + " / " + maxTickets);
	}
	
	public static int ggt(int a, int b)
	{
		if(a < 1 || b < 1)
		{
			return 0;
		}
		int help;
		while(a != b)
		{
			if(a > b)
			{
				if(a % b != 0)
				{
					a = a - (a / b) * b;
				}
				else
				{
					a = a - b;
				}
			}
			else
			{
				if(b % a != 0)
				{
					b = b - (b / a) * a;
				}
				else
				{
					b = b - a;
				}
			}
		}
		return a;
	}
}