The year was 1984. Apple Macintosh was just introduced, as well as our own shiny new computer called “Orao” (Eagle). It ended up being chosen as a standard primary school computer in Croatia from 1985 to 1991. For many of us, kids back then, this was one of the first opportunities to ever use a computer. Simple and rudimentary by today’s standards, Orao was brilliantly designed to avoid using specialized components - only simple TTL logic and off-the-shelf parts were used.
TL;DR: enter BC at the * (star) prompt, press ENTER when asked about the memory size and try one of the following:
1 2 3 4 5 6
Double quotes = shift + 2. To erase something, use ctrl + H or left arrow.