## Article

```catala
new scope A:
  param x content dec
  param y content dec
  param z content dec
  param a content dec

scope A:
  def x := 84.64866565265689623
  def y := -. 4.36829778705320654980
  def z := 654265429805103220650980650.5705405106540
  def a := x /. y *. (x +. y) *. (x *. x *. z *. z)
```