I am stuck on the following problem.

so, you will see in the first image the numbers with the green checkmarks next to them, those are the ones I was able to figure out and the information from these tables I am guessing will guide me in the second part and that is where I am stuck.

Under product S you will see I was able to figure out the testing cost. I did that by taking 4000 and multiplying that by 6240, I attempted to multiply 5250 by 9360 but the answer I get is not correct, next I was able to take developer hours 20 times $12 and got 240 which you will see is correct.

Not sure how I am able to get a few right and not the others when I am using the same formula. Can you please help?

Activity-Based Costing Using the data above for products S and T, calculate the costs using activity-based costing. Allocate the costs of testing, computing, and development based on the rates of activity consumed by each product's development process. If required in your computations, round per unit costs to the nearest cent. Round your final answers to the nearest dollar. Cost Activity Base Testing Hours of testing Computing cost Units of computing power Developer cost Development hours Product S Product T Testing cost $ 24,960 Testing cost $ Computing cost X Computing cost Developer cost 240 V Developer cost Total cost Total cost $ Feedback Check My Work The budgeted activity costs are assigned to products using factory overhead rates for each activity. These rates are called activity rates because they are related to activities. Activity rates are determined as follows: Activity Rate = Budgeted Activity Cost / Total Activity Base Usage The costs are allocated to the product by multiplying the activity-base usage by the computed activity rate