The sales forecast of a popular product sold by PSC Retailers Limited is $600000$ units for the forthcoming financial year. It is estimated that PSC Retailers will purchase each unit of the product for R$2.$ The carrying cost of inventory equals $25\%$ of the purchase price of goods. The ordering cost is R$45$ per order. Two days are required for delivery. The desired safety stock for PSC Retailers is $18000$ units. This amount is on hand.

Required: $($round off to nearest whole number$)$

$2\mathrm{.}1\mathrm{.}1.$ Determine the number of orders for the product to be placed next year.