Question on how high raw material costs calculate into Multiple

Hi all,
I'm looking at acquiring a $4 mil business with an additional $1 mil inventory that is primarily Raw Material and about 15-20% WIP.
Seller wants to sell inventory at value as part of the sale, but in addition to the business price..

Curious, when calculating a multiple, do you all calculate both the numbers?
So.... $800k SDE on $5mil total, (making it a 6.25 X multiple)? Or is there some magical equation whereas multiples exclude the Inventories, making it a 5X ($800k on $5mil)?

Thanks in advance~ appreciate it!