Assume that a customer shops at a local grocery store spending an average of ​$350 a​ week, resulting in the retailer earning a ​$35 profit each week from this customer. Assuming the shopper visits the store all 52 weeks of the​ year, calculate the customer lifetime value if this shopper remains loyal over a​ 10-year life-span. Also assume a 8 percent annual interest rate and no initial cost to acquire the customer.