Consider the question. 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.
 What is the step-by-step reasoning process to arrive at the answer: 4?
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.