Several examples for usage for template helper...
{{Calculator%%add%%3%%6}}Result:
{{Calculator%%add%%3%%6}}
{{Calculator%%subtract%%8%%4}}Result:
{{Calculator%%subtract%%8%%4}}
{{Calculator%%divide%%10%%2}}Result:
{{Calculator%%divide%%10%%2}}
{{Calculator%%divide%%7%%0}}Result:
{{Calculator%%divide%%7%%0}}
{{Calculator%%multiply%%5%%5}}Result:
{{Calculator%%multiply%%5%%5}}
{{Calculator%%divide%%0.666%%0.8}}