The step error coefficient of a system G(s) = 1/(s + 6)

The step error coefficient of a system G(s) = 1/(s + 6) (s + 1) with unity feedback is—

Step error coefficient also called positional error coefficient i.e.,
K_p = _{s → 0}Lim G(s)H(s)
= _{s → 0}Lim 1/(s + 6) (s + 1)
= 1/6