I would like a macro to be written for a spreadsheet

I want the "Quantity Ordered" column of items that match the same sku to be added up. Example: Sku Qty Ordered Column C D E etc ABC 4 xxx xxx xxx xxx 123 3 xxx xxx xxx xxx ABC 8 xxx xxx xxx xxx 123 11 xxx xxx xxx xxx with many multiple skus on sheet NEW SHEET would now read: Sku Qty Ordered Column C D E etc ABC 12 xxx xxx xxx xxx 123 14 xxx xxx xxx xxx data is all cleaned up and the quantity ordered totals of the item being ordered are on the sheet (with all of the other data on the line, such as sku. description)