Ana Cole (SSN XXX-XX-XXXX) is filing Form 1040. Her filing status is Head of Household. She has two dependent children, both of whom are qualifying children for the purpose of the Additional Child Tax Credit. Ana works for the federal government in Puerto Rico. During this tax year, her:

• Earned income (and adjusted gross income) was $12,900
  
  
• Withheld social security tax was $799.80
  
  
• Withheld Medicare tax was $187.05
  
  

Based on this information, what is her Additional Child Tax Credit?

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