; Given the definitions below $($YOUTH$,$ SENIOR, PRICE, DISCOUNT$-$PRICE, and

;; display$-$ticket$-$cost$),$ write the step$-$by$-$step evaluation of this expression:

;;

;; $($display$-$ticket$-$cost $(+204))$

;;

;; Be sure to show every intermediate evaluation step, including the original

;; expression and the final result.

;;

;; Your answer should follow the definition of display$-$ticket$-$cost below.

$($define YOUTH $18)$

$($define SENIOR $65)$

$($define PRICE $10)$

$($define DISCOUNT$-$PRICE $5)$

$($define $($display$-$ticket$-$cost age$)$

$($if $($or $(<$ age YOUTH$)(>=$ age SENIOR$))$

$($string$-$append "Ticket price is $$"($number$->$string DISCOUNT$-$PRICE$))$

$($string$-$append "Ticket price is $$"($number$->$string PRICE$))))$