How to change the output of TOTAL in the currency we need in woo commerce?

Question

WordPress

Good evening (afternoon)!
The site has a wokomerc with two currencies.
Belarusian and Russian currency. using the Currency Switcher for WooCommerce plugin
There is a switcher and geolocation.
Everything works great and well. BUT!
If the client is a Russian (and the store is in Belarusian currency), but the prices are displayed to the clients in Russian.
After the client has issued a CHECKOUT, he receives a letter where not the Russian currency is indicated, but the Belarusian one.
How to make the client select the Russian currency and that the letter and payment be in Russian rubles