Calculator With Till Rolls

I used to have one of those giant calculators that had a roll of paper on it.  I used to play with it all of the time, and I would pretend that it was a cash register since it could print out a “receipt”.  I remember being bummed when the paper ran out since I didn’t know you could buy new till rolls to replace the one it came with originally.  You can imagine my excitement when my father brought home a new one from work.  I don’t think that calculator was used for anything other than taxes and my daily imaginary store.