You can understand why if you think about how division and multiplication are related. 12 divided by 6 is 2 because 6 times 2 is 12 12 divided by 0 is x would mean that 0 times x = 12 But no value would work for x because 0 times any number is 0. So division by zero doesn't work.
At the time of his death, Keith was suffering from emphysema and terminal lung cancer, as well as mourning the recent gunshot suicide of his 27-year-old daughter, Daisy Keith, ten weeks earlier. He committed suicide after he returned from a stay at a hospital.
Reedus debunked his death hoax, which said that he died in a car crash, by constantly updating his status on Twitter. He shared a photo of himself from The Walking Dead where he could be seen in the back of a broken-down car. More than a thousand people shared the picture on Sunday.