How to disable weird rounding of amounts in WooCommerce?

Question

WordPress

Is it possible to somehow influence the number rounding mechanism in WooCommerce?
I am writing a payment gateway for WooCommerce with the transfer of fiscal receipt data.
The store has a discount mechanism in the format of 5% for everything + 5% when paying on the site.
As a result, I do not know how WooCommerce calculates the amount, it either rounds up or down...