What is 3.2 divided by 40,000​

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

Someone me i need with this stuff

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract