An algebra problem by Viki Zeta

Algebra Level 2

$\frac{(\underbrace{4 + \cdots + 4)}_{x^2\text{ times}}}{\underbrace{(x + \cdots+ x)}_\text{x times}} - 2 = \, ?$

Find the value of the above expression given that $k$ is a non-zero real number and $x$ is a natural number.