You have likely discovered Comments in Excel which are useful if you want to capture some thought about the value in a cell. (Right-click on the cell, Insert Comment)
As an alternative to Comments, I sometimes use the N function. The N function lets you add comments that are displayed in Formula Bar. So when I click on a cell and look at the Formula Bar, I see the calculation and my notes next to it.
If you want to use the N function, just type it as shown with ” around the text.
You can use the N function anywhere in a calculation, just put a + either side of it. So your formula could look like this: =22*3.25 + N(“increased quantity to 22”) + 5.5*6