If you’ve ever traveled abroad to a place where the local currency is much different in value from the U.S. dollar, you’ve probably found yourself scrambling to calculate the differences in price when ...

"Return on investment" is a financial calculation used to gauge how well the money you invest earns you even more money. To calculate ROI you divide the earnings you made from an investment by the ...

Use the sales tax calculator to figure out how much sales tax you’ll potentially owe on a purchase. Many, or all, of the products featured on this page are from our advertising partners who compensate ...

Discover how to create your very own multiplication table and keep it handy with easy steps! Learn about the fascinating history and evolution of mechanical calculators, including the gear-based ...

This guide was reviewed by a Business News Daily editor to ensure it provides comprehensive and accurate information to aid your buying decision. Creating a running total (or a cumulative sum, as it ...

NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.

The Rule of 72 is a simple calculation tool for investors to use, but it's not necessarily the most accurate. Here are some ...

Disposable batteries seem so 1990s. Sure, it’s nice to be able to spend a couple of bucks at the drugstore and get a flashlight or TV remote back in the game, but when the device is a daily ...

Suppose you have the opportunity to invest in a project that will require a $100 investment today and pay out a single cash flow of $250 in year ...

Cardless co-founder and president Michael Spelfogel outlines the company’s services on ‘The Claman Countdown.’ Credible promotes Chief Revenue Officer Robert Humann to CEO after nearly 10 years with ...