In the Inca civilization what was the quipo used for?

It involved knots in strings called quipu. The quipu was not a calculator, rather it was a storage device. Remember that the Incas had no written records and so the quipu played a major role in the administration of the Inca empire since it allowed numerical information to be kept.

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.