Each unit uses a chip 3/32 inches long how many units can be made if i have chips that are 9/16 inches long

If you do 9/16 / 3/32 you can change that into 9/16 x 32/3 and cross multiply which gives you 512/27. And that equals 18.96 which you can round to 19. So you would be able to make 19 units if you use the 9/16 chips