def ack(m, n)
if m == 0 then
n + 1
elsif n == 0 then
ack(m - 1, 1)
else
ack(m - 1, ack(m, n - 1))
end
end
def the_answer_to_life_the_universe_and_everything
(ack(3,7).to_s.split(//).inject(0){|s,x| s+x.to_i}.to_s + "2" ).to_i
end
answer = the_answer_to_life_the_universe_and_everything