Sarasota Inc.$$s only temporary difference at the beginning and end of $2019$ is caused by a $$3,390,000$ deferred gain for tax purposes for an installment sale of a plant asset, and the related receivable $($only one$-$half of which is classified as a current asset$)$ is due in equal installments in $2020$ and $2021.$ The related deferred tax liability at the beginning of the year is $$1,356,000.$ In the third quarter of $2019,$ a new tax rate of $20\%$ is enacted into law and is scheduled to become effective for $2021.$ Taxable income for $2019$ is $$5,650,000,$ and taxable income is expected in all future years. $($a$)$ Prepare the journal entry necessary to adjust the deferred tax liability when the new tax rate is enacted into law.$($b$)$ Determine the amount reported as a deferred tax liability at the end of $2019.$