Fold a 20 cm long, 16 cm wide rectangular paper in half for three times to get a rectangle. What's its area? Write the process clearly

Fold a 20 cm long, 16 cm wide rectangular paper in half for three times to get a rectangle. What's its area? Write the process clearly

Fold it in half for three times, and the resulting rectangle should be 1 / 8 of the original, so its area is 20 * 16 / 8 = 40 square centimeters
One fold in half is equal to two, two fold in half is equal to four, and three fold in half is equal to eight