Working Dog Inc. sells equipment for search and rescue dogs. It has decided to produce the rescue dog harness in$-$house rather than order from an external vendor and the production rate per day is $100$ units.

Other data as follows: Forecasted daily demand $=50$ units; Procurement cost per order $=$ $$50$

Annual holding cost $=30\%$; Product value $=$ $$45$

What would be the optimal order quantity?

Note: Answer is $3$ digits only, no decimals, no dollar signs $($Example: $499)$