My question is: If any value from my aList is smaller than a constant variable, I want to take index of that lower value and delete sth from a bList corresponding to that index. Shortly, I want to compare all the values in aList to a constant and if there is a lower value in aList than constant. I will get the index of these and using that index making `bList[index]= 0.`

Example:

Lets say

```
constantToCompare=8
aList=[13, 12, 11, 9, 7]     
bList=[100, 200, 300, 400, 500]

```

So 5th element of `aList` is smaller than `constantToCompare` 

I want to make `bList` = `[100, 200, 300, 400, 0]`

By the way this `constantToCompare` will increase by +1 up to some so that a loop required to do this process.

Thank you.
I hope I am clear.