i need the carrying amount of Ulis accounts receivable at December 31, 2017 and 2018.

An aging analysis of Uli Limited's accounts receivable at December 31, 2018 and 2017, showed the following: Accounts Receivable Number of Days Outstanding 0-30 days 31-60 days 61-90 days Over 90 days Total 2018 $300,200 64,300 85,400 128,800 $578,700 2017 $319,100 114,700 75,900 50,400 $560,100 Estimated Percentage Uncollectible 3% 6% 12% 24% Additional information: 1. At December 31, 2017, the unadjusted balance in Allowance for Doubtful Accounts was a credit of $9,400. 2. In 2018, $42,400 of accounts were written off as uncollectible and $3,100 of accounts previously written off were recovered