PowerShell is a powerful mathematics calculator. In fact, PowerShell has an entire Windows class dedicated to mathematics calculations that can be called by using the [System.Math] .NET class. When you are working with the [System.Math] classes, it is common to call static fields within a class. Static fields are static properties, methods, and objects that can be called to display data or do actions. To call a static field, you call the [Math] (shortened version of [System.Math]) class, followed by two colons :: and the static field name.