Ending balance in Accounts Receivable??? Only need help with that... people have been telling me $6300 but it is not correct when i do the calculations.

Assume the following information for Marin Corp. Accounts receivable (beginning balance) Allowance for doubtful accounts (beginning balance) Net credit sales Collections Write-offs of accounts receivable Collections of accounts previously written off $162,000 11,410 934,000 911,000 6,300 1,600 Uncollectible accounts are expected to be 6% of the ending balance in accounts receivable