Hello! I am currently on “Basic JavaScript: Replace Loops using Recursion” and am having a hard time understanding a particular observation.

It provides an example of how you can multiply *n* elements in an array, by using a for loop, to create the product. This is the code provided:

```
function multiply(arr, n) {
var product = 1;
for (var i = 0; i < n; i++) {
product *= arr[i];
}
return product;
}
```

It then goes on to say the following:

However, notice that

`multiply(arr, n) == multiply(arr, n - 1) * arr[n - 1]`

.

This is the ONE statement that lost me, and I am not able to conceptualize this information. How does one arrive at the conclusion that `multiply(arr, n) == multiply(arr, n - 1) * arr[n - 1]`

, without yet being familiarized with recursion?

I understand how recursion works on a simpler scale (ex. a countdown), but not in this particular situation. Can anyone please elaborate on how I can test this?