1 mile = 5280 ft. So set up a proportion and you will get: 1 mile/5280 ft = x miles/ 16300 ft. Divide 16300 by 5280 and you should get approx. 0.309 miles (to the correct number of significant digits).
There are 5280 feet in one mile. Therefore, 16320 feet is equal to 16320/5280 = 3.09 recurring (that is, 3.090909...) miles.
5280 divided in to 4 = 1320
880
660
1.1364
0.0114
5
4.224
67.5
3.0909
11.3636