You never want to be lossy with user inputs. Save what they told you and then convert for internal logic. The OP just described a language feature where you wa

You never want to be lossy with user inputs. Save what they told you and then convert for internal logic. The OP just described a language feature where you want to multiply euros with usd one place and yen and dinar in another. You don’t need to do that which is why a decimal or 64 bit int is a fine language approach.