Lesson 8 Excel SUBTOTAL Tutorial: The Secret Shortcut Every Pro Uses 💻✨ 💥 Still adding SUM formulas manually for every section in Excel? Stop wasting time — in this video, I’ll show you how to master the SUBTOTAL feature using the super shortcut ALT A B! 🔑 Learn how to: Instantly calculate subtotals for large data Automatically group your data like a PRO Use ALT A B to make Excel work for you Whether you're working with sales reports, invoices, or huge data lists, this trick will save you HOU