Use Evolutionary Solver to solve this non$-$linear program.

Max $2$x$2+0\mathrm{.}4$y$31\mathrm{.}4$z$4$

s$.$t$.$

$5$ x $20$

$5$ y $18$

$6$ z $21$

What are the optimal values of x$,$ y and z$?($Round your answers to nearest whole number.$)$