The demand of a certain part is $1000$ parts/year and its cost is ₹$1000$/part. The orders are placed based on the economic order quantity $\text{(EOQ)}$. The cost of ordering is ₹$100$/order and the lead time for receiving the orders is $5$ days. If the holding cost is ₹$20$/part/year, the inventory level for placing the orders is ________________ parts (round off to the nearest integer).