PHP Arithmetic Operators

Question

//PHP multiplication operators

<div class="transaction-item transaction-price">
<?php
$psf  = "130";
$lot_size  = "14200";
$total_price = $lot_size * $psf; 
?>

<?php print $total_price; ?>  
</div>

Answer 1

<?php
  $lot_size  = $row['area_sqft'];
  $psf  = $row['unit_price_psf'];

  $total_price = $lot_size * $psf; 
?>
<?php print $total_price; ?> 

Answer 2

// To find what percentage of certain amount from total amount

<?php
    $percent_own = $paidAmt / $topay * 100;
?>