I want to have a form with drop down items and total functions

 I eventually want to have a form like the one on the right side of this page, with drop down items and a function to total what visitors pick:

https://www.unisourceprint.com/remax-business-cards/?utm_source=newsletter&utm_campaign=REMAX-BC_03/26/2019&utm_medium=email

You can achieve this by assigning calculation values to the Dropdown list options, and then use Calculation widget to summarize all the selected option values.

How to Assign Calculation Value

and

How to Perform Form Calculation Using a Widget

Let us know if you need more help.