```
a= [ [(54, 54, 54), 
     (21, 21, 21),
     (12, 12, 12) ],
     [(22, 12, 22),
     (11, 11, 11),
     (33, 33, 33)] ]  

some_num = 10
for x in range(len(a)):
    b = list(a[x]**[0]**)
    for y in range(len(b)):
        b[y] *= some_num
    a[x] = tuple(b)
print(a)

```

is there a way to make this iterate over more than just the index 0 (bold)? I am curious what would be the best way to approach this. I am also expecting that list to grow so I am really looking for a tip on how to make it iterate for any number of lists.

Thank you,