PDF Template with Mathematical Computation Output

Hi is there a way to render calculated results in the PDF Template? Like I want the total amount to have price + vat. Or is there a variable for product qoutes to display the total amount of price + vat. See the image below for your reference.
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The PDF Template engine is not capable of doing that. The best it can do is replace some variables with field values. So if you can find a way to prepare your values before-hand, with Workflows and/or logic hooks, then you might be able to achieve what you want.

You can also have a look at my add-on PowerReplacer which adds this functionality and much more.

You can have a custom field in your Quotes/Invoice that keeps the sum and add that variable to the Template.

Thank you for the response and guidance. It seems the mentioned methods are the way forward.