HELP WITH THE FORMULA PLEASE!

It was reported in 2007 that there were 7,234,000 people age 16 or older who had a​ "go outside the​ home" disability and that this was ​22.4% of the population​ (of this age​ group). These are people who cannot go outside the home without help. How large was the total population​ (of this age​ group) in​ 2007?