I am building a string Class that behaves like a regular string class except that the addition operator returns the sum of the lengths of the two strings instead of concatenating them. And then a multiplication operator returns the products of the length of the two strings. So I was planning on doing 

```
   class myStr(string):
         def __add__(self):
             return len(string) + len (input)

```

at least that is what I have for the first part but that is apparently not correct. Can someone help me correct it.