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.

Example Input: [123.275, 156.341, 242.486]
Example Output: [0.236 0.299 0.464]

Example Input: [-16.728, 90.649, 120.224, -20.241, -6.558]
Example Output: [-0.1    0.542  0.718 -0.121 -0.039]

Example Input: [211.788, 178.79, 166.817, 240.628, 4.457]
Example Output:
[0.264 0.223 0.208 0.3   0.006]