Answer:
Case I - 9 fields to yourself
Case II - 2.25 fields to yourself
Explanation:
Case I
Given
In one square mile , 225 soccer fields can fit in.
The region contains 25 people per square mile
Number of soccer fields acquired by per person is equal to number of soccer fields in one field divided by number of people per square feet.
Number of soccer fields acquired to my self 
Case II
Given
In one square mile , 225 soccer fields can fit in.
The region contains 100 people per square mile
Number of soccer fields acquired by per person is equal to number of soccer fields in one field divided by number of people per square feet.
Number of soccer fields acquired to my self 