------
## 最终结论
```python
def find_Average_Of_Cube(n):
    cube_sum = 0
    for i in range(1, n + 1):
        cube_sum += i ** 3
    return cube_sum / n

# Test cases
assert find_Average_Of_Cube(2) == 4.5
assert find_Average_Of_Cube(3) == 12
assert find_Average_Of_Cube(1) == 1
```