Karen is tasked with helping her supervisor decide which method to use when accounting for their companys by-product and two main products, all three of which result from a joint process. At the end of the joint process, the by-product is worth $1,100, Product T is worth $8,600, and Product W is worth $12,900. The joint costs amount to $5,400. Karens company historically uses the sales value at split-off method to allocate joint costs. If all of these products are sold by the end of the year, how much gross margin will Karen report for her company if she uses the production method to account for by-products?