The term digit is often used to represent a number in a specific position in a larger number, or in a number with a fraction expressed using a radix point.
The precipitation of the Andes Mountain climate changes but not drastically between two places. In Colombia there is a lot of rainfall all year round. In Ecuador there is the desert climate without much rainfall. Peru is simalar to Ecuador.
Why do most people live in the tierra templada climate zone rather than in the other three altitude zones in the Andes? Because the temperatures are more pleasant. The climate is good for farming common crops.