Weekly demand for wheelchairs at a Walgreens warehouse is normally distributed with a mean of

$543$ units per week and a standard deviation of $66$ units per week. Walgreens orders the wheelchairs

from Medline at a cost of $$79$ per unit and the holding cost is $26\%$ of the purchase cost per unit per

year. Walgreens would like to maintain a $98\%$ cycle service level for its wheelchairs.

Suppose that Walgreens reviews its inventory continuously and that lead times for orders placed

with Medline are constant at $2$ week$($s$).$

Compute the safety stock required to meet the desired service level for Walgreens.

Rounding instructions:

Carry calculations to at least $3$ decimal places.

Round your answer to the nearest tenth of a dollar $($one decimal place$).$