Need help on where i went wrong on my excel file to find the answer and what the product yoeld would be

The Colonial House Furniture Company manutactures four-drawer oak filing cabinets in six stages. In the frst stage, the boards forming the walls of the cabinet are cut; in the second stage, the front drawer panels are woodworked; in the third stage, the boards are sanded and finished; in the fourth stage, the boards are cleaned, stained, and painted with a clear finish: in the fifth stage, the hardware for pulls, runners, and fittings are installed; and in the final stage, the cabinets are assembled. Inspection occurs at each stage of the process, and the average percentages of good-quality units are as follows: The cabinets are produced in weekly production runs with a product input for 251 units. Determine the weckly product yield of good-quality cabinets. (Round your answer to the nearest integer volue, e.s. 35.) Product yield = cabinets