Not understood explain it plz

Example 2: 

A is a point on the following number line. 

What is the rational number represented by the point A? 
Solution: 
In the given number line, we may note that the number line 
between -3 and -2 is divided into three equal parts. The point A 
is 2 units left to -2. Therefore, the rational number represented 
by the point A is 
$-2-2x\frac{1}{5} = \frac{-12}{5} = -2\frac{2}{5}$