In 2013, 34 pedestrians died on the streets of Denmark. The city of Copenhagen, roundly hailed as the world's pleasantest city for walking and biking, has about 10 percent of Denmark's population of 5.6 million. We can extrapolate that exactly three pedestrians died in Copenhagen in 2013, for a rate of about 0.5 per 100,000.
To be sure, those three deaths deserve due lamentation, scrutiny, and sympathy. On the other hand, they deserve celebration. Copenhagen's pedestrian fatality rate is about as low as it gets. The lowest pedestrian fatality rate of any major American city is 0.76. Copenhagen's rate is a full five times lower than that of the City of Los Angeles, which, at 2.57 (pdf) is towards the high end.
If you divide Copenhagen's fatality rate by Los Angeles', you get 19 percent. The question that some in Los Angeles are now asking is, what happens when you divide by zero?