Colby Company, which uses the allowance method, has Accounts Receivable of $54,000 and an allowance for uncollectible accounts of $6,400 (credit). The company sold merchandise to Irma Hegerman for $7,200 and later received $2,400 from Hegerman. The rest of the amount due from Hegerman had to be written off as uncollectible. Using T accounts show the beginning balances and the effects of the Hegerman transactions on Accounts Receivable and Allowance for Uncollectible Accounts. What is the amount of net accounts receivable before and after the write-off?