Beauleys in UCD purchases tea directly from a small tea grower in Assam at $$7\mathrm{.}75$ per kilogram $($kg$).$ Demand for tea is constant over time with a demand $2,800$ kgs per year. The annualised cost of storing $1$ kg of tea is $2\mathrm{.}50\%$ of the purchase cost. Placing an order with the small tea grower costs $$225$ per order. How many orders per year will the small tea grower have to fulfill for Beauleys?