For a stock price following a binomial process. In each step u $=14\%$ and d $=-14\%,$ the risk$-$free rate is given by $(1+$rf$)=1\mathrm{.}04($per step in the tree$).$ The initial stock price is $49.$ What is the risk$-$neutral probability that the stock will have $18$ up movements and $2$ down movements is $[$provide your answer as a percentage and round to two decimals: e$.$g$.$ for $0\mathrm{.}002873=0\mathrm{.}287\%$ enter $0\mathrm{.}29]$