On February$1,$ Hu Company sold inventory on account to a customer for $ $9$ comma $000$ with terms$2/10,$ n$/30.$ The cost of the inventory was $ $7$ comma $500.$ On February$6,$ the customer received an allowance of $ $2$ comma $500$ from Hu Company. If the customer made payment on February$9,$ how much Cash would the customer$$ pay?