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Percentage can be calculated on a basic calculator by multiplying with the percent button. If the percent button is not present, the percent amount can be converted to a decimal and that can be multiplied instead.


To calculate percentages on a calculator, divide the part by the whole and then multiply the answer by 100. For example, to find what percent of 80 is 20, divide 20 by 80. The result is 0.25, then multiply 0.25 by 100 which equals 25 percent.


A calculator can be used to calculate the size of an angle using an inverse trigonometric function if the lengths of the two line segments forming the angle are known, according to RegentsPrep.org. The formula for the number of radians in an angle is arccosine(adjacent side length/hypotenuse length)


Calculators to find the duration between two dates are available on TimeAndDate.com, Calculator.net and ConvertIt.com, as of 2015. All three websites require the user to enter the start date and end date. The duration is displayed in years, months and days or in days only.


Calculate monthly escrow payments for property taxes by dividing the total annual property tax liability by 12. You may pay property taxes into an escrow account monthly and then pay in full to municipal tax authorities when due, according to the Home Loan Learning Center.


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Maximax is one of several methods for choosing between different options, such as what price to set for your services or changing your restaurant menu. When you do maximax, you list all the options and all possible outcomes. Then, you pick whichever option offers the biggest potential payoff. When y


The real GNP formula is found by determining the nominal Gross National Product (GNP) by adding capital gains of foreign earnings to the GDP. You will then need to adjust for inflation by dividing the nominal GNP by the Consumer Price Index (CPI) and then multiplying the total by 100. In the study o


This interest calculator helps you to understand how much money you can accumulate by saving small amounts of money each week in an account. Advertisement (Note: This calculator does not take taxes into account. More on the tax topic in a later article.) Weekly contributionEnter a small amount of mo


This article explains how to calculate a company's economic profit and explains the difference between accounting profit and economic profit. Once revenues and the costs of production are defined, calculating profit is pretty straightforward; see the steps below. Simply put, profit is equal to total