public function getAverageNumShotsToHitTarget($aTotalShots) { $dao = new HowitzerDao($this->db); $totalTargetsHit = $dao->getTotalShotsHitTarget(); if ($totalTargetsHit != null && $totalTargetsHit != 0) { return number_format((double) ($aTotalShots / $totalTargetsHit), 2, '.', ''); } return 'no targets hit yet'; }