Sum the total number of products rejected for having a trim length that is too long.
number of product rejected refers to ScrapedQty; trim length that is too long refers to scrap reason where Name = 'Trim length too long'
SELECT SUM(T2.ScrappedQty) FROM ScrapReason AS T1 INNER JOIN WorkOrder AS T2 ON T1.ScrapReasonID = T2.ScrapReasonID WHERE T1.Name = 'Trim length too long'