CalculatorDU - for daily use

A simple, free calculator app. It provides basic calculation, value storage, and verification.
# Arithmetic operations
Perform addition, subtraction, multiplication, division, and square root operations.
# Save value
Input values and calculated values can be saved for later use.
# Check
You can verify the calculation process.
# Copy and paste
You can copy and paste numerical values.
# Operation symbols
You can select multiplication and division symbols.
# Numerical display format
You can select decimal points, delimiters, and split digit groups.
# Digits
Displays up to 21 digits for calculations.
# Language
You can change the display language.
# Orientation
Works in both portrait and landscape modes.