The current price of a non$-$dividend$-$paying stock is $$40.$ Over the next six months it is expected to rise to $$44$ or fall to $$36.$ Assume the risk$-$free rate is zero

What is the risk neutral probability of the stock price moving up$.$ Please report the number with at most two digits after the decimal point $($e$.$g$.,00\mathrm{.}00).$