Instructions: In this task, you will be given a list of numbers. The goal is to divide all the numbers in the list by a constant such that the sum of the resulting list is 1. The output should be rounded to 3 decimals.
Input: [-18.859, -24.699, 138.143, 248.979, -3.421, 242.775]
Output:
[-0.032 -0.042  0.237  0.427 -0.006  0.416]