Can I turn bells into Nook Miles?

Excuse me, I'm a bit confused about something. I was wondering, is it possible to convert physical bells, like the ones you might find on a door or a church, into Nook Miles? I'm asking because I've been playing Animal Crossing: New Horizons and I've noticed that Nook Miles are a valuable currency in the game. However, I'm not sure if there's a way to convert real-world items, like bells, into this virtual currency. Could you clarify if this is possible, and if so, how it might be done? Thank you for your time.