Statement Perl

$total = 0;                       
$weekCounter = 1;                 
while ( $weekCounter <= 5 ) {    
   print "Enter sales for week $weekCounter: ";
   chomp( $sales =  );     
   $total += $sales;              
   ++$weekCounter;                
}
$average = $total / 5;           
print "\nSales averaged $average computers per week\n";