I been working on this assignment for a bit and was down to that last section. it was asking to calculate total sales using receipt datasets. i figured it just add them up together but i felt that might missing something else too... can you see and see if there any missing information and/or is just adding them up being too simple? what would be expected? can you show calculate them and show me how you do it?

please dont hesistate to ask for more information but please be more specific so i will do the best to provide.

attached pictures are the informations i have and the question.