i don't know, i use a calculator all the time. might be a fun way to split costs of dinners at nostr events, and share individual totals, for zapping the payer....or if i need to convert usd to sats (but i think terry yiu is make something like this)...

I don't know. Nevermind.

There’s a cool app called Calca, that lets you build calculations with variables. I use it to calculate water chemistry for my beer brewing. Be cool if I could share it.