To create a custom function in Excel VBA, you need to enable the Developer tab and go to the Visual Basic panel. Next, right-click on Microsoft Excel Objects > Insert > Module and enter the code.

How to Use .NET Class Library in Excel VBA. Your business's software developers can work with Microsoft's .NET framework to create powerful Excel macros for your spreadsheets. The .NET framework ...

You will create a VBA Sub in that application that finds and closes hidden Excel applications. Click "Insert" and choose "Module" to add a new module to the project.

Although Microsoft Excel itself is a big calculator, using Excel Macro & VBA remains a popular method to create a calculator. Obviously, lots of coding is required to build a prototype of a calculator ...