Help show regular and offer price default variation product

I have a product with variations.

I want to show here the regular price and the discounted (crossed out) price of the variation marked by default as it would be done with a normal product

i want show like this:

I have tried in many ways but I can’t. Can anyone help me?

I want to show a producer with variations the regular and reduced price of the variation marked by default.

Ideally, it would be great to be able to look at the code so to identify if it could be as simple CSS fix or using the strike HTML tag wrapped around the price which would add a line through it. There may also be a hook that you could use to target the price and edit the output pre-render.
Do you have a URL?

the url: Home - Zenit Descanso