no errors, but, it does't show the result just displays none and congratulations message pops up for next topic

am i finding a cube root of a number ?? i just dont get functions calling functions:slightly_smiling:

```
def cube(number):
number = number * number * number
return number
def by_three(number):
if number % 3 == 0:
return cube(number)
else:
return False
```