Staples 2 1/4" x 85' Adding Machine, Register and Calculator Rolls, 2-Ply, 10/Pack 18216-CC

to use an adding machine before the 18th century when they came out calculators women had to use an adding machine okay I thought it was an abacus facts yet so all you do is put in the number you have to hit plus you have $80 and a DS up there now if you want to add another number $90 your total is right here but you still only have eighty and ninety dollars right there okay and let's say you wanted to subtract 50 from that you put the number in first then the minus on down on 20 80 90 50 times either way to get a total when you subtract subtract then hit did not know number always goes in first say that again like this number always goes in first okay so like right now you have your at once one money you want subtract 60 so you would take 60 and it hits a trust a trap oh wait we just found another wages $500 and so now we're at 560 so let's say we're totaled out the little star key tha