Dan Bumblauskas is the owner of a small lowa company that produces electric knives used to cut fabric. The annual demand is for

$8,500$ knives, and Dan produces the knives in batches. On average, Dan can produce $100$ knives per day; during the

production process, demand has been about $90$ knives per day. The cost to set up the production process is $$100,$ and it costs Dan

$$1\mathrm{.}00$ to carry a knife for $1$ year. How many knives should Dan produce in each batch?

Dan should produce knives in each batch $($round your response to the nearest whole number$).$