Deep Thought, the second greatest computer worked out the answer "42", which is right. But men did not know what to do, because nobody knew what the question was. 
It takes Deep Thought 7½
When asked to produce The Ultimate Question, Deep Thought says that it cannot. It can help to design an even more powerful computer, which can. This new computer will incorporate living beings into the "computational matrix" and will run for ten million years. It is the planet
I was under the impression that – right at the beginning of the movie, The Hitchhiker's Guide to the Galaxy – Deep Thought was asked "What is the meaning of Life, the Universe, and Everything?"