Iberostar Hotels & Resorts provides free paper hand towels for their guests. A paper hand towel costs $20$ cents and has an alternative investment with an annual interest of $30\%.$ The monthly demand for hand towels is $1000$ towels. Each time the management place an order, they incur a delivery cost of $$20.$ What is the optimal number of paper hand towels in each order?

Rounds your final answer to the nearest integer.