How can we display computed values on the Webadi in the line level ?

I am developing a WebADI template for journal entry.

I need to display the converted_dr and the converted_cr for foreign currency journals at the line level.
The template captures the entered_dr/cr by the user along with the currency conversion details.

The users have a further requirement to display converted amounts (entered_dr/cr * conversion rate)

How can  this be acheived ?

Thanks