Suppose in a week $($i$.$e$.,$ Monday to Friday$)$ a stock price is given as: $$2\mathrm{.}00,$ $$6\mathrm{.}00,$ $$4\mathrm{.}00,$ $$7\mathrm{.}00,$ $$9\mathrm{.}00.$

How much is the mean of the stock price in that week?

Enter your answer in the following format: $1\mathrm{.}23$

Hint: Answer is between $5\mathrm{.}26$ and $5\mathrm{.}66$