if the variable $page value от 1 до 5 - you need to get 1 on the output
if in a variable $page value от 5 до 10 - you need to get 2 on the output
if the $page variable has a value от 10 до 15 , you need to get 3 on the output
and so on
How can this be implemented? nothing came to mind = /. thank!