Well so then be grateful that InvalidError went out of his/her way to elaborate on a matter that some might find beneficial and you're not willing to. You didn't want to explain it, so someone else did and now you feel justified in complaining about that... I don't understand that perspective.
Unfortunately, I have dealt with a lot of people who simply wants to be spoon feed with information both at work and apparently here in this forum. It seems people are too lazy draw out the simple conclusion based on the information provided. At least I hope it's people being too lazy to think for themselves rather than people too stupid to think for themselves.
Last time I've checked doing simple multiplication does not kill.