$3-2$Question $1,$ Problem $$7\mathrm{.}9$HW Score: $0\%,0$ of $18$ pointsO Points: $0$ of $2$@SaveA production line at V$.$ J$.$ Sugumaran's machine shop has three stations. The first station can process a unit in $5$ minutes. The second station has three identical machines, each of which can process a unit in $18$ minutes $($each unit only needs to be processed on one of the three machines$).$ The third station can process a unit in $7$ minutesY is the bottleneck station, with a bottleneck time of minutes per unit $($enter your response as a whole number$).$