Exercise 1.2

Translate the following expression into prefix form: $$\frac{5 + 4 + (2 - (3 - (6 + \frac{4}{5})))}{3(6 - 2)(2 - 7)}$$
    
      
    (define a 2)
    (/ (+ 5
          4
          (- 2
             (- 3
                (+ 6
                   (/ 4 5)))))
       (* 3
          (- 6 2)
          (- 2 7)))