VBA Addition for Simple ActiveX Text Control Input

Hi Guys,

So I would like to do additions while in presentation mode. However, I cannot seem to find anything online that shows me how to not just add the ActiveX Text Control Input (which was easily done after by enabling developer mode).

Can someone please help me out with the needed code for showing calculated total based on the numbers from 7 ActiveX Text Control fields?

I will happily welcome any assistance at all because I really need this and I have failed so many times in my attempts.: