Create code that can be used in multiple projects (dll?) (Resolved)

[FastEddie]

What is the process for making a function into a dll(?) that can be used in multiple projects? Let me use the extremely simple function as an example.

Public Function DoCalcs( _
        ByVal a As Double, _
        ByVal b As Double, _
        ByVal c As Double, _
        ByVal d As Double) As Double
 
        Dim myCalc As Double = (a * b / c - d)
        Return myCalc
 
    End Function

How would I make it so that I can add this function to any project using a reference (or whatever)?