can someone help me with this please and no excel

The current stock price of Alcoco is $45, and the stock does not pay dividends. The instantaneous risk-free rate of return is 3%. The instantaneous standard deviation of Alcoco's stock is 30%. You want to purchase a put option on this stock with an exercise price of $50 and an expiration date 30 days from now. Accordfng to the Black-Scholes OPM, you should hold shares of stock per 100 put options to hedge your risk. Assume 365 days in a year