Curious about how the interest on your loan works? Learn how interest rates are determined and how to calculate interest on a loan yourself.

Wondering how much interest you could earn in a savings account? Here's how to crunch the numbers to calculate your earnings.

Want to know how to make a gradient in GIMP? We show you how to create and use custom gradients and create transparent gradients in GIMP.

Calculating the cost of goods sold gives a business insight into its performance and helps calculate profit.