$.$ A company in Calgary serves a market in the north$-$western United States. Now it

ships LTL at an average cost of $$28$ per unit. If the company establishes a

distribution centre in the market, it estimates the TL cost will be $$15$ per unit,

inventory$-$carrying costs will be $$6$ per unit, and the local LTL cost will average $$6$

per unit. If the company forecasts annual demand at $100,000$ units, how much will

they save annuall