This guide contains Important Information, Sample Operations, Initializing the Calculator, Safety Precautions, Handling Precautions, Removing the Hard Case, Turning Power On and Off, Adjusting Display Contrast, Key Markings, Reading the Display, Configuring the Calculator Setup, Inputting Expressions and Values, Toggling Calculation Results, Basic Calculations, Remainder Calculations, Function Calculations, Calculation Ranges, Number of Digits, and Precision, Errors, Before Assuming Malfunction of the Calculator, Replacing the Battery, Specifications, Frequently Asked Questions.