Background
See
Examples of pages where this functionality would be helpful
Coaches and players of many sports
Note this is one example of thousands of articles about coaches and players in multiple sports, where table of accomplishments exist, and need updating as time progress.
List of fires
Note that one table does have averages, which would be easier to update is math in tables existed. However, two other tables exist in that article, both of whom might be better if totals and/or averages were included. Presumably not included because of the pain of updating.
Hurricane damage tables
Many Hurricane pages do not have a damage table, but some do. Not a major need when the data is old, but could be useful while values are being updated.