Please help me !!

Note: Tax for Canada !!

Os medical expenses paid during a 12-month period ending in the current year totaled $3,200. The medical expenses for Os 20-year-old son paid during the same 12-month period totaled $1,400. For the current year, O had net income of $140,000 and the son had net income of $4,000. What is the maximum federal medical expense credit? (Enter the amount as a positive number.)