Smarty Math ?

In summary.tpl

{$product.amount} x {include file="common/price.tpl" value=$product.display_price}

It shows text for 2 pcs product as " 2 x 100 ".

But I need to show sub total as 200

is it possible? multiply variables?

{$product.amount} and

{include file="common/price.tpl" value=$product.display_price}

How to show multiplication?

edit:

solution :

{include file="common/price.tpl" value=$product.display_subtotal}

Use

{include file="common/price.tpl" value=$product.display_price*$product.amount}