Give the step-by-step reasoning process and then the final answer. Rich ran a 24-mile marathon in 3 hours and 36 minutes. On average, how long, in minutes, did it take Rich to run a mile during the race?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
3 hours is 3 * 60 = 180 minutes. Thus 3 hours and 36 minutes is 180 + 36 = 216 minutes. Thus, he ran the 24 miles in 216 minutes, and each mile took 216 / 24 = 9 minutes for Rich to run.
The final answer: 9.