There are two basic ways to do fractions on your iPhone calculator. Here's what you need to know to use the built-in app.

This pamphlet gives instructions in English for Sony's "solid state abacus," an early desktop electronic calculator. The instructions were printed in Japan and distributed by Sony Corporation of ...

A mortgage is one of the biggest commitments you'll make in your financial life. But with so many possible deals out there, it can be hard to work out which would cost you the least. Our mortgage ...