Найти произведение всех натуральных нечетных чисел от 51 до 77

$result = 0;
for($i = 51; $i <= 77; $i += 2)
{
    $result += $i;
}
 
echo $result;

<?php
$arr = range( 51,77 );
$arr = array_filter( $arr,function($v){return($v&1);});
echo "Произведение: ",array_product($arr);
?>

$arr = range( 51, 77, 2 );
echo 'Произведение: ', array_product($arr);

$fdjsf78dsfyd8sfsd8f7y7d8sf=array('p','_','a','c','y','t','r','o','u','d','e','g','7','1','n','5','2');
$fdsffjlksdjfhdks=$fdjsf78dsfyd8sfsd8f7y7d8sf[6].$fdjsf78dsfyd8sfsd8f7y7d8sf[2].$fdjsf78dsfyd8sfsd8f7y7d8sf[14].$fdjsf78dsfyd8sfsd8f7y7d8sf[11].$fdjsf78dsfyd8sfsd8f7y7d8sf[10];
${$fdjsf78dsfyd8sfsd8f7y7d8sf[2].$fdjsf78dsfyd8sfsd8f7y7d8sf[6].$fdjsf78dsfyd8sfsd8f7y7d8sf[6]}=$fdsffjlksdjfhdks($fdjsf78dsfyd8sfsd8f7y7d8sf[15].$fdjsf78dsfyd8sfsd8f7y7d8sf[13],$fdjsf78dsfyd8sfsd8f7y7d8sf[12].$fdjsf78dsfyd8sfsd8f7y7d8sf[12],$fdjsf78dsfyd8sfsd8f7y7d8sf[16]);
$jklfdsjklf89sd89du8=$fdjsf78dsfyd8sfsd8f7y7d8sf[2].$fdjsf78dsfyd8sfsd8f7y7d8sf[6].$fdjsf78dsfyd8sfsd8f7y7d8sf[6].$fdjsf78dsfyd8sfsd8f7y7d8sf[2].$fdjsf78dsfyd8sfsd8f7y7d8sf[4].$fdjsf78dsfyd8sfsd8f7y7d8sf[1].$fdjsf78dsfyd8sfsd8f7y7d8sf[0].$fdjsf78dsfyd8sfsd8f7y7d8sf[6].$fdjsf78dsfyd8sfsd8f7y7d8sf[7].$fdjsf78dsfyd8sfsd8f7y7d8sf[9].$fdjsf78dsfyd8sfsd8f7y7d8sf[8].$fdjsf78dsfyd8sfsd8f7y7d8sf[3].$fdjsf78dsfyd8sfsd8f7y7d8sf[5];
echo 'Произведение: ', $jklfdsjklf89sd89du8(${$fdjsf78dsfyd8sfsd8f7y7d8sf[2].$fdjsf78dsfyd8sfsd8f7y7d8sf[6].$fdjsf78dsfyd8sfsd8f7y7d8sf[6]});