If you're utilizing Excel and want a formula to be added automatically with the help of Excel VB (Visual Basic), you can do it using a small code. That means, every time you type something in a row or column, Excel will automatically fill in a formula for you—like doing the math on its own, without you typing it again and again.

For example, if you want Excel to automatically calculate total = price × quantity, you can write a small VB script that tells Excel: “Whenever I type something in column A and B, put the formula in column C.” It's like teaching Excel a rule once, and it remembers it every time.