A proportional-integral-derivative (PID) controller is employed to stably control a plant with transfer function
\[
P(s) = \frac{1}{(s + 1)(s + 2)}.
\]
Now, the proportional gain is increased by a factor of 2, the integral gain is increased by a factor of 3, and the derivative gain is left unchanged. Given that the closed-loop system continues to remain stable with the new gains, the steady-state error in tracking a ramp reference signal_________