//        Original expr --> 5 - 3 - 2
// Inline prettyprinted --> (- 5 (- 3 2))
// The value of this expr = 4.0

//        Original expr --> 4 / 2 / 2
// Inline prettyprinted --> (/ 4 (/ 2 2))
// The value of this expr = 4.0

//        Original expr --> 4 * 3 * 2 + 1
// Inline prettyprinted --> (+ (* 4 (* 3 2)) 1)
// The value of this expr = 25.0

//        Original expr --> 2 * 3 + 4 + 5 * 6
// Inline prettyprinted --> (+ (* 2 3) (+ 4 (* 5 6)))
// The value of this expr = 40.0

//        Original expr --> 2 + 3 + 4 + 5 + 6
// Inline prettyprinted --> (+ 2 (+ 3 (+ 4 (+ 5 6))))
// The value of this expr = 20.0

//        Original expr --> 2 / 1 * 2
// Inline prettyprinted --> (/ 2 (* 1 2))
// The value of this expr = 1.0
