Here's why:

* Miles are a unit of length in the imperial system. 1 mile is equal to 5,280 feet.

* Decimeters are a unit of length in the metric system. 1 decimeter is equal to 0.1 meters.

Conversion:

* 1 mile = 1,609.34 meters

* 1 decimeter = 0.1 meters

Therefore, 1 mile is equivalent to 16,093.4 decimeters, making miles significantly larger than decimeters.