In mathematics, a simple calculation can be done by carrying out an operation with one or more numbers. There are different types of calculations that can be done such as addition, subtraction, multiplication, and division.

A calculator is a device used for calculating mathematical expressions. Calculators are most often used in math classes to help students solve problems and work out equations, but they can also be used for simple everyday tasks such as adding up grocery items or tallying points from a board game.

Calculators have an arithmetic logic unit that solves arithmetic
expressions.

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