An investor owns a certain number of shares worth a total of TL $100,000.$ The current price of the stock is $120$ TL$.$ The movements of the stock are shaped according to the market situation. The market may be stable, downward or upward on a daily basis. The probabilities of these situations and the average movements and standard deviations of the stock in these situations are given in the table below.

When the stock price falls, the investor tries to expand his$/$her investment by buying new stocks worth $2000$ TL$.$ On the other hand, when the price rises, he wants to make a profit by selling $2\%$ of the stock he holds. Show with a simulation how many shares the investor will own after $100$ days. $($excel only$)$

Probabililty Mean Change of the stock Standard deviation

Downside $0\mathrm{.}21-2\mathrm{.}71\mathrm{.}26$

Stationary $0\mathrm{.}451\mathrm{.}10\mathrm{.}83$

Upward $0\mathrm{.}343\mathrm{.}21\mathrm{.}13$