Problem: If you want to know, which pages / items link to a specific page, you can click on "What links here" in the left column under Tools, example. But you can't see the number of items which links until you click on "500 search results per page" or sometimes you need "5000" to see the line: "Displayed 1,846 items."
Proposed solution: Add this line (how many items) everytime and independently of an enough big number of search results per page.