Python (trying to understand the flow)

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Python2.7

Write a program which takes 2 digits, X,Y as input and generates a 2-dimensional array. The element value in the i-th row and j-th column of the array should be i*j.
Note: i=0,1.., X-1; j=0,1,¡­Y-1.
Example
Suppose the following inputs are given to the program:
3,5
Then, the output of the program should be:
[[0, 0, 0, 0, 0], [0, 1, 2, 3, 4], [0, 2, 4, 6, 8]]

My program:

x = int(raw_input())
y = int(raw_input())

l=[]
for i in range(x):   
    inner_list = []
    for j in range(y):
        inner_list.append((i*j))
    l.append(inner_list)
print l

Instead of defining 'inner_list' inside the 'for i', if I define it outside as in:

x = int(raw_input())
y = int(raw_input())

l=[]
inner_list = []
for i in range(x):   
    
    for j in range(y):
        inner_list.append((i*j))
    l.append(inner_list)

I am not able to understand the output:

Output:
[0] /inner_list
[0, 0] /inner_list
[0, 0, 0] /inner_list
[[0, 0, 0]] /l
[0, 0, 0, 0] /inner_list
[0, 0, 0, 0, 1] /inner_list
[0, 0, 0, 0, 1, 2] /inner_list
[[0, 0, 0, 0, 1, 2], [0, 0, 0, 0, 1, 2]] /l
[0, 0, 0, 0, 1, 2, 0] /inner_list
[0, 0, 0, 0, 1, 2, 0, 2] /inner_list
[0, 0, 0, 0, 1, 2, 0, 2, 4] /inner_list
[[0, 0, 0, 0, 1, 2, 0, 2, 4], [0, 0, 0, 0, 1, 2, 0, 2, 4], [0, 0, 0, 0, 1, 2, 0, 2, 4]] /l

Why the final output is like above
[[0, 0, 0, 0, 1, 2, 0, 2, 4], [0, 0, 0, 0, 1, 2, 0, 2, 4], [0, 0, 0, 0, 1, 2, 0, 2, 4]] /l

and not

[[0,0,0],[0,0,0,0,1,2],[0,0,0,0,1,2,0,2,4]]

What I have tried:

I have tried to everything, but no luck.