Multi step form in EE ?

Hello there! I need to have a “X-steps form”. Each step is a form containing different elements such as Combobox, Radiobuttons, Inputfields and so on… at the end of each step I can choose if add another step or go in the “final step”.

In the “final step” I need to do some math with the datas provided in the previous steps and output the result to the user.

Which is the best way to achieve that in EE?

Thanks you for the advices! 😊