Write a python function to find the average of cubes of first n natural numbers.
def find_Average_Of_Cube(n):  
    sum = 0
    for i in range(1, n + 1): 
        sum += i * i * i  
    return round(sum / n, 6) 
<s>[INST]<<SYS>>Given a task and its code, generate test cases for the code.<</SYS>>Write a python function to find the average of cubes of first n natural numbers.
def find_Average_Of_Cube(n):  
    sum = 0
    for i in range(1, n + 1): 
        sum += i * i * i  
    return round(sum / n, 6) [/INST]assert find_Average_Of_Cube(2) == 4.5
assert find_Average_Of_Cube(3) == 12
assert find_Average_Of_Cube(1) == 1</s>