Marge Inoferror, materials manager at Inoferror Enterprises, has determined her company$$s financial information as follows:

Annual revenue: $$1,000,000$

Annual COGS: $$760,000-$ including Labor $($$$40,000),$ Material $($$$520,000),$ and Overhead $($$$200,000)$ costs

Average inventory $($encompassing all different types of inventory$)$: $$800,000$

Order lead time $($LT$)$: $5$ weeks

Order frequency: monthly $($i$.$e$.,$ once a month$)$

And we assume there are $52$ working weeks a year.