Interactive Web Calculator

A clean, responsive calculator built from scratch with HTML, CSS, and JavaScript. Designed for integration into web apps or Google Workspace Add-ons. Features include:

Editable input box with live result display

Smart input handling (prevents duplicate operators)

Auto-formatting of results with thousands separator

Pressing Enter wraps the entire operation in parentheses for clarity

Keyboard shortcuts: Enter to calculate, Escape to clear

Integrated button to trigger Google Sheet actions

Interactive calculator built with HTML/CSS/JavaScript Editable input & live result display Smart operator handling Pressing Enter wraps the operation in parentheses Includes Google Sheet trigger button

Main Purpose:

To perform large and continuous addition, subtraction, multiplication, and division operations, while allowing easy review and correction of input errors without restarting the entire calculation from scratch.