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<?phpdeclare(strict_types=1);namespace Phpml\Math;class Product{/*** @return mixed*/public static function scalar(array $a, array $b){$product = 0;foreach ($a as $index => $value) {if (is_numeric($value) && is_numeric($b[$index])) {$product += (float) $value * (float) $b[$index];}}return $product;}}