That's totally wrong. It's not OK to add ratios. It's OK to add populations.
You can't add 1/3 and 1/3 to get 2/6 if the first 1/3 was reduced from 3 of 9 and th second was 1/3. Well, you can, but that only works in the degenerate case where the items you add (actually, average) are equal and there's no point in adding in the first place.
"Freeway" is the term for the kind of road that has "highway" in its official name. Also "parkway", from the era when there was more landscaping around freeways.
The original URL is provided by the Share button on the right. But it's not a link. (To visit it, you'd have to copy and paste back into the browser. You can't share a link to the app you are shared from
)
So the URL is available as always, but the link is not.