A company wants to determine its reorder point $($ROP$).$ Demand is variable and they want to build a safety stock into ROP. If the average daily demand is $9,$ the lead time is $3$ days, the desired z$-$value is $1\mathrm{.}96,$ and the standard deviation of usage during a single day is $2\mathrm{.}97,$ what is the desired value of ROP?