InfoPath Dev

I'm struggling with how to input an Excel formula into InfoPath. I'm hoping the community can tell me how I can convert it to an InfoPath-friendly formula.

The formula is If[Total}<=80, "Contact","Process" 

You need two rules on your Total field. The first one will have a condition of Total 80 - that will set your target field to Process. I've attached a very simple sample. Save the file locally, right click and select Design. From there you can preview and try it out.