I have an Excel sheet which logs shipments of ice cream (OrderQuantity, OrderWeight) for each month, as well as inventory count for each ice cream at the end of each month (ClosureQuantity, ClosureWeight).
I need to create a table that will have, for each month, the sum of "OpenQuantity" and "OpenWeight" and the sum of "ClosureQuantity" and "ClosureWeight", where 'OpenQuantity' of month X is the 'ClosureQuantity' of month X-1.