i = 999
j = 999
while 1 do
	a = i * j
	if a.to_s.reverse == a.to_s then
		puts "#{i} x #{j} = #{a}"
		break;
	elsif i == 100
		i = 1000
		j -= 1
	end
	i -= 1
	puts "#{i} x #{j} = #{a}"
end