Book excerpt: Unlock the full potential of your calculator with this comprehensive guide packed with clever shortcuts, hidden features, and practical tricks! Whether you're a student tackling complex math problems, a professional seeking efficiency, or just someone who loves mastering gadgets, this book offers step-by-step instructions on using calculators like never before. From basic functions to advanced hacks, you'll discover tips that save time, boost productivity, and simplify even the trickiest calculations. Perfect for anyone looking to become a calculator power user!