The balance in Accounts Receivable at the beginning of the year was $ 550 comma 000. The balance in Accounts Receivable at the end of the year was $ 750 comma 000. Customer accounts of $ 460 comma 000 were written off. The company collected $ 4 comma 060 comma 000 from credit customers and $ 1 comma 090 comma 000 from cash customers. What are credit sales for the​ year?