Iterator + Map - How do divide every element, including the last element, by the last element

The blog post discusses a Rust programming challenge related to converting string dates into pixel values for use in a graphical representation. It details the author's attempts to use iterators and functional programming concepts like map and filter_map, facing a specific issue in computing a ratio involving the last element in a series. The author shares code snippets highlighting their thought process and seeks assistance to resolve a particular division problem.