I do not know how to put the tape into the calculator. There is a place in the back that it looks like it should go - I put it in there, press the advance paper key and nothing happens.

Push the roll of paper in until it will go in no further. On mine, it goes a bit more than a quarter of an inch. Once the paper is in all the way, press the Feed button until it shows at the top.

If it is still not feeding through, you may have a jam somewhere. Take the top of the paper area off and manually inspect the area to make sure nothing is out of place.

If you are still having problems, try feeding the paper in without the cover on. You can watch to see what is stopping it.