User blog comment:P進大好きbot/Elementary Large Number beyond PTO(Π11-CA0)/@comment-24923514-20190604150105/@comment-35470197-20190604210852

Here, "a is divisible by b" means that there exists a c such that a = bc. Sorry for not explaining it, because it is a traditional convention in algebra. Therefore "how many time 11 is divisible by 10" is 0.