Hot Calc is a very tiny and simple module that we developed for the needs of Hot Cleaning template. It calculates the estimates service price. User can select one of the available services from a drop-down menu and enter numeric value (in our example, it's area). The module will calculate price of the service based on the selected service and quantity.
Backend parameters of the module can be reached from Module Manager > Hot Calc. There you can create services that will be offered in the drop-down menu and enter the text that will be shown above the fields. Also, you can switch between square meters and square feet. It's possible to select the currency for the calculated price.