readability - Ideal breaks for long numbers?
Design
How Chunking Helps Content Processing
Chunking is a concept that originates from the field of cognitive psychology. UX professionals can break their text and multimedia content into smaller chunks to help users process, understand, and remember it better.
UX Chunking: a new digestible product design process
The Principle of Chunking: What Airbnb taught me about good design - Usability Geek