I need 7,714 solar panels to power my new workshop. If each box contains 24 panels, about how many boxes should I purchase?

7,714 solar panels : 24 panels in each box = about 321.42.

You have to get 1 extra box for the remaining panels since you can't purchase 321.42 boxes, so you should purchase about 322 boxes.

You should purchase 322 boxes. If you take 7.714 decided by 24 solar panels per box, you get 321.416667 and because you can purchase. 416667 of a box, you round up to 322