; 1 ]=> (car (cdr (car (cdr (cdr '(1 3 (5 7) 9))))))
; 
; ;Value: 7
; 
; 1 ]=> (car (car '((7))))
; 
; ;Value: 7
; 
; 1 ]=> (car (cdr (car (cdr (car (cdr (car (cdr (car (cdr (car (cdr '(1 (2 (3 (4 (5 (6 7))))))))))))))))))
; 
; ;Value: 7