A rectangular sheet of iron, 96 cm long and 80 cm wide, should be cut into a square of the same size without any surplus. What is the maximum side length of this square? How many pieces should it be cut into?

A rectangular sheet of iron, 96 cm long and 80 cm wide, should be cut into a square of the same size without any surplus. What is the maximum side length of this square? How many pieces should it be cut into?

four hundred and eighty