I have multiple fields and wanted to know how you would get the online

I have multiple fields and wanted to know how you would get the online form ton provide a complete calculation at the end of a survey for example?

Hello,

If you already have assigned calculation values to options of form fields, you can use a Form Calculation widget to calculate the grand total. Basically, you can simply sum up fields within widget. 

Here is a guide: How-to-Perform-Form-Calculation-Using-a-Widget

We can take a look at your form if you face difficulties. If so, please link the form here so we could check it closer.