Answer:
If we're looking for those that don't have insurance, it's 504. If we're looking for those that do, it's 1,512.
Explanation:
Multiply 22.4 by 30 because there's roughly 30 days in a month. You'll get 2,016. Divide 2,016 by 4. You'll get 504. Multiply 504 by 3 to get how many have insurance.