# ∑_(m=0)^3▒1/2m. I am having problems understanding this problem, can you help me to understand this?

$3$
${\sum}_{0}^{3} \left(\frac{1}{2}\right) m$
$= \frac{0}{2} + \frac{1}{2} + \frac{2}{2} + \frac{3}{2}$
$= 0 + \frac{1}{2} + 1 + \frac{3}{2}$
$= 3$