It means that it is impossible to get something for nothing, or the idea that even if something seems free, there is always a cost, no matter how indirect or hidden the cost is.
9 total acres of land
5 1/4 equally sized portions
5 1/4x = 9 acres
x = 9 acres/ 5 1/4
x = 1.71 acres
What are the exerpts above you dont have those