Board Thread:General Discussion/@comment-5907266-20160109034728/@comment-5907266-20160110232802

Also, just some quick math to clarify something I mentioned up there, let .9999...=x. Then 99.999....=100x. (Since the nines go off infinitely, you don't lose any decimal places.) So 100x-x=99 which means 99x=99 which means x=1. So .999999...=1 making 99.9999....=100.