Many schools and classes using the virtual classroom are focused on Mathematics and STEM subjects, where frequent in-class calculations are required. Currently, both teachers and students must rely on external tools or devices to perform basic arithmetic, disrupting the flow of teaching and learning.

Integrate a built-in calculator tool directly into the virtual classroom interface to reduce dependency on external devices such as Casio scientific calculators. The tool should support core features like arithmetic operations, fractions, exponents, and equation solving—similar to functions available on Casio fx-580VN X. It should have a simple, movable UI, accessible to both teachers and students with permission control, and compatible across desktop and tablet devices.