SOLVED: Casio MS-80B desk calculator. when i punch 100 + - Fixya
Casio MS-80S Basic Calculator for sale online | eBay
This is the only modern Calculator I own. I know it's not as fancy as some of the ones I see here hoping to get something better in the future. : r/calculators
Amazon.com : Casio MS-80B Standard Function Desktop Calculator,Black : Office Products