A calculator can be used to perform mathematical calculations that may be too complex for the average person to compute. Calculators are useful for doing things like adding up the total of all of your expenses for a year, or figuring out how many gallons you will need to wash your car. A calculator can be an invaluable resource for many situations; from adding up grocery bills to figuring out your gas mileage.

It is a device that performs mathematical calculations. There are different types of calculators including graphing calculators, scientific calculators, and financial calculators.

The first thing that people do after inputting into a calculator is to make sure they’ve pressed the right buttons. Also, one should also ensure that the right operators, such as +, -, *, or /, are used for a given calculation.

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