Clark, a widower, maintains a household for himself and his two dependent preschool children For the year ended December 31, 2018, Clark earned a salary of $32,000 He paid $3,600 to a housekeeper to care for his children in his home, and also paid $1,500 to a kiddie play camp for child care He had no other income or expenses during 2018 Before considering any limitation due to tax liability, how much can Clark claim as a child and dependent care credit in 2018