Mine

on *:join:#evolution_team:{ 
  set %limite $calc( $nick(#,0) - 1) 
  set %tot %limite + 3
  if ($me isop #team7) { 
    .mode #team7 +l %tot
  } 
  unset %limite %tot
} 

on *:part:#evolution_team::{ 
  set %limite1 $calc( $nick(#,0) - 1) 
  set %tot1 %limite1 + 2
  if ($me isop #team7) { 
    .mode #team7 +l %tot1
  } 
  unset %limite1 %tot1
}