Hello, I can't figure out how to translate "The reason for doing x". I have come up with "la raison pour laquelle nous faisons / on fait x" but I think there must be a shorter way of saying. I tried "la raison pour faire" but I get barely any hits on Google so I don't think this is very good. To give an example sentence : "The reason for using this method is that it is faster". Thank you!