I figured it out.
add_action( ‘woocommerce_single_product_summary’, ‘display_custom_field’, 16 );
function display_custom_field ( ) {
global $product;
$pid= $product->get_id();
$actual_price = floatval($product->get_price());
$custom_price= floatval(get_post_meta($pid,’case_pack’,true));
$final_price = $actual_price * $custom_price;
echo ‘<b>Case Price:</b>’ . ‘ $’ .$final_price;
}