Service price calculation

I would like to count service price, but I do not understand it.

For example, 400.-Ft/m2 Painting, Decorating 2600.-Ft/m2 you want to calculate the amount of visitors that will get m2 will be given a price. how can I solve this? Thanks for help. Sorry for my bad English!

http://wordpress.org/extend/plugins/jazzy-forms/