A production line at V$.$ J$.$ Sugumaran's machine shop has three stations. The first station can process a unit in minutes. The second station has identical$$ machines, each of which can process a unit in minutes$($each unit only needs to be processed on one of the $$machines$).$ The third station can process a unit in minutes.

Part $2$

Station $2$

is the bottleneck$$ station, with a bottleneck time of

$$

$1$ minutes per unit $($enter your response as a whole$$ number$).$