Sarah and Todd Kim are married and have two children age $6$ in $2024.$ Sarah and Todd both work and earn annual salaries of $$85,000($Sarah$)$ and $$4,000($Todd$).$ To care for their children while they work, they pay Sarah$$s sister $(20$ years old$)$ $$6,500.$ Assuming that a joint return is filed, what if any is their credit for child and dependent care expenses?