Can't Wrap My Head Around This This Recursion Example

So there is this recursion example in chap 3 of Eloquent JavaScript, it goes like this: Consider this puzzle: by starting from the number 1 and repeatedly either adding 5 or multip

Solution 1:

The first time you call findSolution() it will return the result of the last line of that function find(1, "1"). In that case "1" is history, which is being set by calling find. The value of current is 1, which was the first parameter in find(1, "1")

The important thing to understand is that you are calling a function that is calling a newly defined function find. The results of that function, which will recursively call itself is an exercise left to the reader (you). Whatever that result is will be returned by findSolution.