Question: 
Write a python function to find the cube sum of first n even natural numbers.


Model's Code:
def cube_Sum(n):
    return sum((2 * i) ** 3 for i in range(1, n + 1))



Sample Correct Code:
def cube_Sum(n): 
    sum = 0
    for i in range(1,n + 1): 
        sum += (2*i)*(2*i)*(2*i) 
    return sum


Asserts:
assert cube_Sum(2) == 72
assert cube_Sum(3) == 288
assert cube_Sum(4) == 800


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 420 of 974: 306/420 (72.85714285714285%): success