How to get the total of field entries?

I would like to have total boxes at the end of my form that adds up from other input boxes, how is this achieved??

Thanks 

To achieve such, you can either have the Form Calculation widget as your total box following this guide — How-to-Perform-Form-Calculation-Using-a-Widget

Or, you can just use a regular textbox field (Short Entry Field) or Number field to display the total then use conditions for the calculation— Conditional-Logic-Inserts-Text-Calculation-Into-A-Field

If you have questions regarding this, please feel free to contact us again anytime.