At the beginning of $2018,$ Uptown Travel, Inc. has the following account balances:

Accounts receivable $$42,000($Debit$)$

Allowance for Bad Debts $$5,000($Credit$)$

During the year, credit sales were $$830,000.$ Cash collected on credit sales was $$770,000,$ and $$18,000$ was written off. Uptown uses the aging $-$ of $-$ receivables method to record bad debts expense. The amount estimated as uncollectible was $$25,000.$ The amount of Bad Debts Expense for $2018$ is