Hi Coda Team 
First off, huge kudos for the amazing work you’ve done with Coda! One of my favorite features is the ability to summarize a column’s values using the Summary row at the bottom — super helpful and elegant.
That said, there’s a small workflow enhancement that I think could really boost usability: showing the sum (or average, count, etc.) of selected cells automatically, similar to how Google Sheets displays it in the gutter when you highlight multiple cells.
Sometimes, I don’t want to apply filters or adjust the entire view — I just want a quick total from a few manually selected values. Having this kind of inline, real-time feedback would be a great quality-of-life improvement and save time for quick data checks or comparisons.
Would love to see this small but mighty feature added to Coda. I believe it would make an already powerful table experience even more dynamic and intuitive.
Thanks for considering it!