Answer:

Step-by-step explanation:
400^2 = 160,000
5 2/6 = 32/6 = 16/3
6 70/30 = 250/30 = 25/3
16/3 * 25/3 = 400/9
400/9 / 160,000 = 1/3600
28,800 acres burn per day or in a day.
The last three, I believe, are statistical.
8m+3
Because sum means adding so you add 8m and 3