Give the step-by-step reasoning process and then the final answer. Terese thinks that running various distances throughout the week can make one healthy. On Monday, she runs 4.2 miles; Tuesday, 3.8 miles; Wednesday, 3.6 miles; and on Thursday, 4.4 miles. Determine the average distance Terese runs on each of the days she runs.

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
The total distance Terese runs is 4.2 + 3.8 + 4.4 + 3.6 = 16 miles. Therefore, she runs with an average distance of 16 / 4 = 4 miles.
The final answer: 4.