For some reason—or maybe for no good reason at all—Excel hides a good tutorial on customizing numbers. To find it, go to Help (F1), click on the Index tab and under Type keywords , enter format . Then ...

Learn how to create your own custom number format. In Word, you can quickly number a list by selecting the items and clicking the Numbering button on Word’s Formatting toolbar.

We can reduce the number of digits using a custom format, but be careful; you might get some unexpected results! (We’re specifically working with millions, but you can apply this technique to ...