https://www.codecademy.com/courses/python-beginner-nzzVa/3/4?curriculum_id=4f89dab3d788890003000096

Oops, try again. total([0, 3, 6]) returned 0 instead of 9

I'm trying to use the length() function to compete this exercise but i don't know how to do it... help?

```
n = [3, 5, 7]
def total(numbers):
result = 0
for i in range( len(numbers) ) :
result = numbers[i] + result
return result
```