$6.$ A company has recorded the last five days of daily demand on their only product. Those values are $120,125,124,128,$ and $133.$ The time from when an order is placed to when it arrives at the company from its vendor is $5$ days. Assuming the basic fixed$-$order quantity inventory model fits this situation, and no safety stock is needed, which of the following is the reorder point $($R$)?$