def mult(matrix, n):
return [[element * n for element in line] for line in matrix]
matrix = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9]
]
print(mult(matrix, 5))
ZGVmIG11bHQobWF0cml4LCBuKToKICAgIHJldHVybiBbW2VsZW1lbnQgKiBuIGZvciBlbGVtZW50IGluIGxpbmVdIGZvciBsaW5lIGluIG1hdHJpeF0KCgptYXRyaXggPSBbCiAgICBbMSwgMiwgM10sCiAgICBbNCwgNSwgNl0sCiAgICBbNywgOCwgOV0KXQoKcHJpbnQobXVsdChtYXRyaXgsIDUpKQo=
[[5, 10, 15], [20, 25, 30], [35, 40, 45]]