on *:TEXT:!calc*:*:msg $iif($chan,$v1 $nick -,$nick) $iif($2,$+($2-,$chr(61),$calc($2-)),* Insufficient parameters.) alias calc echo -at $iif($1,$+($1-,$chr(61),$calc($1-)),* Insufficient parameters.)
This is short. By the way, the on *:INPUT:.. i prefer alias much better.