Using good practices

[dr-hextanium]

I have found a severe issue that goes against the ethical code of is-even-2.
You're actually following good practice.
I demand that this module be restored to its former glory.

One of the steps we can take to achieve that state is by converting all consts to vars.
Next, instead of using number literals, we should convert string literals to numbers using our own, homemade, inefficient as fuck toNumberfunction.