This is what Tom Nook uses when you sell him a bunch of trash and bugs.

I'm not usually one into Animal Crossing, but I had this app back then when I had my DSi and it's alright for what it's intended for.

again what do you want me to say cos it's just an animal crossing themed calculator

https://www.youtube.com/watch?v=scNgpjVlXIg

you can never escape the passage of math

animal crossing calculate these nuts in your mouth