Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.

Excel files bloat from ghost used ranges, formatting, pivot caches, and images. These quick fixes massively cut the size of ...

Brand new and improved! Cyberdrop-DL now has an updated paint job, fantastic new look. It's now easier to use than ever before! If there is a feature you want, you've discovered a bug, or if you have ...