{{math}} helper
Helper for doing a simple math operation. Use it in loops, for example to number items from 1 instead of 0 with @index. The helper converts both arguments to numbers before it calculates the result.
Available operations: +, -, *, /, %
Syntax:
{{math ARG_1 OPERATOR ARG_2}}
Examples:
{{math @index '+' 1}}
{{math @index '-' 1}}