please i need someone to explain the answer for this question

The following give the number of theaters (in thousands) showing a newly released movie for every day after opening:

Number of weeks

after opening Number of theaters

1 9300

2 8700

3 7650

4 6100

5 5350

6 4950

7 3950

Forecast the number of theaters showing this movie for the 8th week after opening using the 5-week moving average. Round your answer to the nearest integer.

Correct Answer:6013