Let

$$

$=$

$$

$($

$$

$)$

$,$

where

$$

$($

$$

$,$

$$

$)$

$=$

$($

$$

$2$

$,$

$$

$+$

$$

$)$

and

$$

$=$

$[$

$1$

$,$

$2$

$]$

$$

$[$

$0$

$,$

$6$

$]$

$.$

Calculate

$$

$$

$$

$$

$$

$$

$$

$.$

Note: It is not necessary to describe

$$

$.$