why am I gettng the wrong output in MATLAB with this code?

why am I gettng the wrong output in MATLAB with this code? The gain in the numerator is 2 in my input but comes out as 0.5 in the output
s=zpk(‘s’);
g5= (2*(s+8))/((s+3)(s+0.1)(4*s+6));
%%output

g5 =

    0.5 (s+8)

(s+3) (s+1.5) (s+0.1)