This template is for creating interactive calculators. It requires the calculator gadget. The calculator works by default. You can opt out at: Preferences > Gadgets > Template Gadgets > Enables javascript Calculator template.
You can use this template multiple times on a page to make input widgets, with some of the widgets having formulas based on other widgets, like a spreadsheet.
You can use {{Calculator label}} to mark text as a label for a calculator widget.
Statistics for this template are available at [1]