300
There are 316800 feet in 60 (= five twelves) miles.
6
There are 28800 twelfths in 2400.
seven twelves
29
There are twelve twelves in 144. 144 = 12 x 12 = 12 squared = 12²
2400 Meters = 2.400000000
2400 in = 200 ft
2400 ÷ 10 = 240. There are thus 240 tens in 2400.
2400 meters = 1.49129086 miles
4 of them.