Passage
Consider the following snippet of code and answer all the subquestions that follow:
```
P = [[1, 2, 3], [2, 4, 6], [3, 6, 9]]
s = 0
p = 1
for i in range(len(P)):
for j in range(len(P)):
if i == j:
s = s + P[i][j]
if j == len(P) - 1:
p = p * P[i][j]
print(s)
print(p)
```