examples of algebraic K-theory groups

$R$	$K_0(R)$	$K_1(R)$	$K_2(R)$	$K_3(R)$	$K_4(R)$
$\mathbb{Z}$	$\mathbb{Z}$	$\mathbb{Z}/2$	$\mathbb{Z}/2$	$\mathbb{Z}/48$	0
$ℝ$	$\mathbb{Z}$	${ℝ}^{\times }$
$ℂ$	$\mathbb{Z}$	${ℂ}^{\times }$

Algebraic K-theory of some common rings.