A good workaround for you here could be using a currency converter app from the Shopify App store. It won't be the exact solution, but it can definitley help. You can see the currency converter apps I like the best below:
I hope this helps! How is everything else going with your store, what are you selling?
Nick | Community Moderator @ Shopify - Was my reply helpful? Click Like to let me know! - Was your question answered? Mark it as an Accepted Solution - To learn more visit the Shopify Help Center or the Shopify Blog