FR : calculate the sum of several numbers

Hi,

I just encountered a specific case that Math doesn't already solve.

I need to calculate the sum of several numbers. The thing is, I don't know how many numbers.

Math doesn't seem to handle such cases. Should we create a specific case for that ? Like `{exp:math formula="sum" params="1|2|3|4|5|6|7|8"}`

Of course that would work for other operators too.

Thanks :)
