Facing the Excel sum problem

I happen to be not a great excel professional due to any kind of extend so I am unsure whether or not this can be really possible. I do have a sheet that has a price list displaying reference number, outline, expense tax, cost income tax, margin, and profit along with market value.
It is around 650 rows long. I prefer to come up with an invoice in a new sheet and enter the reference number within a cell and then have this transfer in which the item files (description, margin and sell value) this is not likely to be the invoice I deal out to customers however, instead one who enables myself to determine work profit since it moves. I suppose I would most likely have to enter a sum for any item manually as well.
Can this appear feasible?
