We recently received a question about setting up calculations in SmartBuilder and recorded a short video showing some of the basics of building your own math calculations.

Video: https://share.suddenlysmart.com/public/support/math-calculations.mp4
Sample lesson: https://share.suddenlysmart.com/public/support/math-roi-calculator.sb4

Of course, building custom calculations depends on the specific equation that you are trying to set up.