there are approximately 4.5 births in a country in each year, find the birthrate in units of birth per minute

I am assuming it should read 4.5 millions births.

We need to figure out how many minutes there are in a year and then divide the annual total by that number.

number of minutes in a year = 365 days * 24 hours * 60 mins = 525600 minutes

birthrate = 4500000 births / 525600 minuteds = 8.56 births/minute