This dude's so retarded.
Let me just explain your misunderstood point.
Qur'an told us we should pray 5 times, but did it tell us how? nope.
Qur'an told us we can beat our wives, but did it tell us how? nope
This is why the Prophet was sent, To explain these parts and spread the message.
He told us to take the meswak (something arabs used to use to clean their teeth for before Toothbrushes) and "hit" her with it as long as there's no blood and barely any damage has been done.
So before taking parts of quran out of context, please consider understanding the context, thanks, violent American (sorry other Atheists if I was wrong by calling him violent Atheist. :()